Diagnosing and repairing Vibe Slick a0 amp?

IT WORKS! Perry thank you so much you've been incredible! This has been such a rewarding experience! Thank you for all your help and everything you do for this community! It is very greatly appreciated! Feels like the amp is brand new! There is a bit of crackling when changing the gain or using any of the switches but I think this is standard for old gear. I will clean the dust from the pots and see if that helps. I plan to have my gain set and not touch it so this does not bother me.

Once again thank you so much!!!