Thanks Gus!
Went through a bunch of threads,
mine does the 1 kc whine thing at certain settings
Using 0.1 I/O caps instead of 0.022 seems to be the ticket.
Used by Randy California on the first Spirit album, the mamas and the papas, the turtles, and Buddy Emmons for steel guitar wtf?
I bet that converting this to a stomp box is what causes the oscillation as it is supposed to hang right off the guitar jack, the extra input cable on the stomp box version might be to blame, will do an experiment.