turnabout with narosla is crazy loud and squealy!

[tomasjjj]

so, wanted to try to put a angry charlie with an xotic ep booster, but with the ability to switch the order of the effects on a 3pdt. i had some proto pcbs made awhile back, and with the virus had a bit of time to populate the boards.

its pretty decent, however, i cant turn the narosla boots control all the way up, or the turnabouts gain without crazy crazy squealing oscillation and all kinds of terrible noise going on. its is a bit better when its turnabout into the narosla, but to be honest both ways are pretty unusable atm!

ive pretty much just stuck one infront of the other and managed to get the 3pdt working, but either the gain in the stages is way too much, or ive got some huge feedback loop problem as these two should work fine together, shouldnt they? schematic attached and some voltages.
ic1 is tl072, q3 is 2n5457 and q4 is 2n5088, and its on 17v charge pump supply. VB is actually the 5v coming off a regulator chip too, not 15 volts!
IC 1 1-5v
       2-5
       3-4.5v
       4-0v
       5- 5v
       6-5v
       7-5v
       8-17v
Q3   14v drain
       250mv source
       0 on gate
Q4 17v on emitter
     9v on base
     8.5v on collector