http://www.morleypedals.com/pwa-iies.pdf
its a twin t style wah, not an inductor wah. it is nothing like the bad horsie wah. which imho is a much better wah, if you remove all the cmos switching and buffer stages that are completely useless. the one i rebuilt based off the actual section years ago sounds just like the real thing without all the extra crap. morley will actually give you an inductor [well they did me] cause i asked them what value mine was and it was bad
play with c5 and c6