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I finally recieved the 5457's from Mammoth, and i have them installed.  The biasing is on par now, and the pedal functions.  Is there any harm in tweaking the trimpots to taste? or are there certain voltages (too high or too low) that would shorten the lifespan of any components.  The only reason i ask is because I like the way the pedal sounds with the T1 at around 8V.

In any case, the pedal functions fine and definately has a cool sound. I've been on kind of an overdrive kick lately.

Thanks again.

Thanks for the fast reply.  I will first hunt down some 5457's and replace the 201's and see how the pedal reacts.  If the strange gating issue still occurs afterwards, I will cross that bridge then.

Thanks again.

I recently assembled a Flabulanche. Here is an image of the guts(component side):



Now I will first say that I assemble this from parts I had laying around, so I ended up substituting a few things.  I'm curious to know if my substitution of certain parts is what is causing my issue.

Instead of 1N5817 diodes I used 1N5818 diodes, but I wouldn't think that would matter so much.  Instead of the 2N5457 I used J201.  My supply voltage after the voltage doubler is about 17.98V, but even with my 10K trimmers dialed all the way down, I get about 12.7V at T1, about 13.5V at T2, and about 14.4V at T3.  I am also getting a gate type of effect with both HI and LOW compression settings.  Basically if I play lightly the sound won't come through, but if I dig in on the guitar it will come through.  My guess is these problems arise from using J201's instead of the 2N5457 and not working with the bias circuit, but I would appreciate someone smarter than me to tell me that is the case.

Thanks for any insight.