Reviewing this tale of woe, I find no mention of initial bias. It's a common failing that people will 'zero' the pots before power-on, and *before* RTFM! Reading that fine manual will reveal the bias pots to be wired the 'wrong' way, i.e. fully clockwise to zero. Leaving them with factory-setting is recommended until either 'fine-tuning' with meter in *each* FET's supply (difficult, not for the newcomer) or complete 're-do from start'.
Hopefully helpfully - and "Best'v the Festive"!
Dex, ZL2DEX
