Sharkfin Q's on build doc and tweaks

[jtn191]

I couldn't find the latest build doc for the Sharkfin (aka Maestro FSH-1). After some digging, I found this--is it the latest? https://web.archive.org/web/20180712194845/http://www.madbeanpedals.com/projects/Sharkfin/Sharkfin_2015.pdf

this is the pcb https://ibb.co/DQKN5DK
I'm trying to eliminate what sounds like some power whine (could be the charge pump?) and then swap a transistor to move the LFO up in pitch into a more musical range (looks like 2n5088 in Q4 should do the trick for that). Any help would be appreciated 

Here's what it presently sounds like (I did noise reduction in post, but it is noticeably there when effect's engaged)