I don't use clamps or paste - I let the exhaust leak and puff carbon then clean exhaust pipes and open carb fuel stand off when I feel like it.
Exhaust flow, Engine Temp, light weight, Timing and Jets are critical on just how fast I want to go.
I would not even use a baffle save for a Cop that would attempt to stop me.
Baffles do have a tendency to Pop Out and there's no way a Breganze can beat a Harley FXWG riding over an inch of water in which case you will CRASH!
But give me a dry open road with a few corners and I kiss that Harley 1360 FXWG or a KZ1000 goodbye
Really liked the 82 1100 GSX Suzuki Kantana - But to say the least for the average Joey, we can't maintain them.