Sea Urchin (DBD) fx loop and oscilation

[323effects]

Just built up a DBD clone with an FX loop stuck in the feedback path.  I used the split-n-blend from the tagboard site so i can blend in as much of the pedal in the loop as i want.  http://tagboardeffects.blogspot.com/2012/02/split-n-blend.html
I just stuck the split-n-blend circuit between lug 3 of the feedback pot and the following 22n cap.

The problem is that it wont oscilate like the DBDs normally do with the feedback pot maxed.  The feedback pot works as it should, but its like the max repeats are clamped and it wont oscilate. Could the blend circuit be clamping the repeats?? Not sure what's going on here... 
Any help you guys could offer would be great!

[Flaconsius]

Really fine add to the Delay.
I just can say try bypassing the Split n´ Blend Circuit to ensure that there is the problem.
Regards.