I removed Q303 and replaced with 6.8k and voltage on C404 rose to 28V. Replaced Q 305/310 with usual alternatives:2N3440 and 2N 4033 . Now voltage at C404 is at ps rail 84 V. Also had removed all other transistor in output. The amp is connected to a light bulb limiter which is not showing any excessive current draw. I'm stumped. I should be looking at complementary pa configuration with a single ended supply rail. It's as if Q305/314 are not connected?