hello again
1n3754 finally arrived from Poland so I've installed that and placed it I its clip
when I was testing with the 1n3193 temporarily installed r716 (probably the only 100r resistor that had tested within tolerance so I hadn't replaced it) started smoking so I ordered some 1watt 100r metal film resistors
replaced r716 with one and fired 'er up. pretty much instantly started burning (a lot more spectacularly than the carbon comp resistor did)
am I correct in assuming that q6 may be drawing too much current?