so i have been working on my 63 triumph for a while, its been one of those builds that fights you the whole way. Finally got the motor dialed in and took it for a spin around the block, when i hit the throttle, my chain tensioner, spring loaded sprocket type, bends to much for the chain slap and just starts to hit the frame cross memeber in the bottom rear. My question is, can I heat up the tube and pinch it some, so basically making it flatter instead of round, clearing up some room for the chain tensioner? It would be a pain in the ass to redo the whole chain setup since its a weld on. Any body got any ideas? Thanks in advance!