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I guess I'll try removing the regulator and running at 12V. Although that's a bit annoying, as one of the reasons I chose the project is that I had a free 18V output, and I liked the idea of running the same voltage as the original Mistress.

The only other advice I have is to try swapping one pedal, in and out at a time with the current lover, and try to isolate which one isn't playing nice.

This is badass  !  I've always wanted to get a hold of one of these and run it through its paces.  I'm kind of a sucker for old Maxon modulation and delays.

Yes, mild hiss is normal, especially if you're going into an amp that's being overdriven.  In my experience with the electric mistress, she is a finicky bitch.  She just doesn't get along with certain pedals.  I've built the current lover and old chap, and both of those pedals didn't get along with analog delays in front of them.  They also didn't get along with a Digitech Drop.  This hiss that accompanied the sweep was louder than the effected guitar signal with the drop engaged.  The only thing I found that helped with my noise issues was having a buffer at the beginning of my signal chain.  Even with that, I still had issues when using the Digitech drop.  Ultimately, I ended up ditching the use of the mistress because of these issues and went back to using my trusty bf-2. 

I've been a fan of, and loved everyone of your mistress builds.  That being said, I think this is the sexiest one yet 🥵😍.

Question... in your video you posted, is your mistress after an analog delay?

Congrats! 🎉

Nice!  Glad you got this one sussed out.  It turned out great.

Killer build as always my man!  I never quite understood all the hate the metal zone gets.  For something that's supposedly garbage, Boss sure did sell a shit ton of them. 

Hell yeah!  I love the old horror movie vibe with the font and graphics.  Bela Lugosi, Boris Karloff, Vincent Price... I'm a sucker for their flicks  .

I absolutely love the aesthetic on this one 🥵.  One of your absolute best!

Now that you have the voltage regulator sorted, Here's how I set up my fraudhackers.  For the clock frequency, set your manual and depth knobs to minimum.  Probe TP1 with your dmm on it's frequency setting and adjust your clock trimmer to 40kHz.

For bias, set your depth and res knobs to minimum.  Input your sine wave.  Now, audio probe TP2 or if you want to follow the official boss service notes, probe pin 1 of Q3, and adjust your clock trim to the cleanest sound.

For the resonance set manual and depth knobs to minimum.  Set your res knob to max.  Hook up the output of your pedal to an amp, and short the input jack tip to the sleeve.  Now adjust T1 to just below self oscillation.

If you still have weird stuff going on after this then we'll have to do some more troubleshooting but your main initial issue has been corrected.

I should also mention that there's a possibility your regulator might need to be replaced with a new one.  I know they're sensitive to reverse polarity but, I'm not sure about having the input and output reversed.

Thank you! I'll give this a try later today. I think I've been totally mixed up on this whole thing; so I've got a humble pie to eat.

You're welcome.  We've all been there.  I've had plenty of "Doh!" moments with some of my builds. 

I should also mention that there's a possibility your regulator might need to be replaced with a new one.  I know they're sensitive to reverse polarity but, I'm not sure about having the input and output reversed.

Now that you have the voltage regulator sorted, Here's how I set up my fraudhackers.  For the clock frequency, set your manual and depth knobs to minimum.  Probe TP1 with your dmm on it's frequency setting and adjust your clock trimmer to 40kHz.

For bias, set your depth and res knobs to minimum.  Input your sine wave.  Now, audio probe TP2 or if you want to follow the official boss service notes, probe pin 1 of Q3, and adjust your bias trim to the cleanest sound.

For the resonance set manual and depth knobs to minimum.  Set your res knob to max.  Hook up the output of your pedal to an amp, and short the input jack tip to the sleeve.  Now adjust T1 to just below self oscillation.

If you still have weird stuff going on after this then we'll have to do some more troubleshooting but your main initial issue has been corrected.

[L]

78L05ACZ

Yeah, I need to get rid of the remaining few of whatever I have, because it's an extra variable with builds like this that need a reg— it's an L78L05ACZ https://www.taydaelectronics.com/datasheets/A-176.pdf which has the I/O pins reversed...at least on the diagram.

I am half tempted to clip it and splice in a standard one where there's no mystery. In a wonderful happenstance, a number of non-L specimens showed up in a big batch of NPNs while I was measuring them all.

Yep, That's the exact voltage regulator I've used on all of my boss and ibanez flanger builds.  Same exact part number and I purchased them from Tayda.  You definitely have yours in the wrong direction. 

EDIT:  The pin connection on that datasheet for the TO-92 package is BOTTOM view.  I think that's why your getting confused.

Are you sure about your voltage regulator?  I used an ST Micro 78L05ACZ on both of my fraudhacker builds and it's oriented just like the silkscreen on the pcb.