I’m sorry to hear that your pedal isn’t working correctly.
I’ll need to get some more information from you…
Did it ever work correctly? From your post in January it seems like it started working….is that correct? It’s important for me to know if it ever was working right in order for me to troubleshoot it quickly through the forum without seeing it.
If raising the gain trim pot all the way up didn’t solve the problem then replacing it with a higher value is not a good solution.
How confident are you in your soldering work? My first guess of why this is happening is that something isn’t making a good connection somewhere…especially if the pedal once worked. This type of issue is common when there isn’t enough solder on the joints or if the solder joints weren’t heated up enough to get the solder to flow properly into the joint. So that’s the first thing to check. If you have any questions about your solder joints you can take some (detailed, in-focus) photos of your board and let me look at them.
The next thing to do is to turn up the tone trim pots (both high and low). Turn them up the same number of turns each as to retain the relative levels of each. Turn them up nearly all the way (around 20 turns) to see if that makes a difference. Remember the suggested values in the assembly manual were only starting points.
-Brach