Also check the emitter of Q90 to see if a .01uf or a 470pf or 220PF is there.
There was a change to lower the value from .01 to 470 pf to level the output
power so 80M wasn't 15-20W when 20m is maybe 8.
Some have tried it with low bands working very poorly. I tried it on a friends
radio ad the effect was poor power over all. for his it needed to be 1000pf.