Just finished up my SH build and I realized that some people might want a little more delay output on their builds. With the stock value it's just a hair above unity. Sometimes it's good to have a bit more especially for slapback. If you want to increase the output of the delay Mix control, simply lower R18 from 12k to something like 6k8 or 8k2. A socket is appropriate.
Also, one thing I think I did not mention in the build doc: when you have the MIX control very high (3/4 up to full) you may hear some delay under the OD even when it is bypassed. There is actually no way to get around this in this "tails" type application. The OD section feeds through the MIX and FEEDBACK controls in reverse which then goes through the delay about back out. It's really not that bothersome, but please understand this is a consequence of this particular design and it only happens when the MIX is very high.
Let's call it a "feature" thanks Santa bean!!!