Remove the gain pot. Leave pins 1 & 8 open for less gain. Use fixed resistors between these two pins for a preset level of gain, or just wire the two together.

Adjust the value of the 220 uF cap up or down as needed. Up for more bass down for less.

Did you try those?
Quote by guitar/bass76
Did you try those?

yeah. they were the ones from the schematic at runoffgroove. I was wondering if you guys had any more of your own.