I love my Fender amps. I have a 68 Vibrolux Reverb and a 65 Deluxe Reverb. They sound perfect with single coil guitars but I don't care for the tone with Gibsons. I say Gibsons and not humbucker guitars because I have a 78 Thinline Tele with humbuckers and it sounds fantastic through both amps. Is there a way to get my Fenders to play nice with the Gibsons? Speaker swap, tube swaps, anything? I have a 79 Marshall JMP combo for the Gibsons but usually gig with one of the two Fenders. I like to switch between a Tele or Strat and a Les Paul for the songs we cover. Maybe I'm asking too much of a Fender amp, but I love the cleans and don't want to switch brands. Any advice would be appreciated.