ADCOM GFA-565 Monoblock Upgrade

Are you retiring under your own terms? I hope so. And I wise you luck. Who can you recommend for doing repairs on adcom and other brands ? I’m down here in Florida
I have a Adcom 5 channel amp. I forget the model but it’s the one that’s does not have the same power on all five channels and would like to make it the best it can be
Thanks
And be safe