Actually now that I'm home, there are 2 - .01 caps an one .1uf cap and I already changed the .1 to .022uf to add more bass and it still has too much compression. I got alot of pedals on my board but they are all true bypass. All BYOC except for a modded GCB-95.
A smaller cap would cut bass. So if you added a .022uf(223), that would give you less bass and less compression. Are you sure you didn't add a .22uf(224) cap...that one in your pic looks too big to be a .022uf. The stock tonebender is about as bassy as it gets. Adding a .22uf would not give you anymore bass response...it would just make it more flubbery and compressed. If you like marshall tone, try replacing that cap with a .033uf, the 100k resistor right in the middle with a 47k, the 470ohm with a 1K, and swapping out the Q1 with a PNP silicon transistor like the 2N5087. It will be noisier, but it will rip your face off.