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well made the trip, put about 1500 miles on her, it gat a exhaust leak somewhere on the way back, now it starts hard and run ruff, so i have been trying to find the problem, it also will pop a flame out the carb, i hope i did not burn a valve, any thoughts?


You don't say whether you're running solid or hydraulic lifters. Many of those old Shovels run solids and can have problems with valves to tight.
However, the more likely culprit is a loose front exhaust valve. If it's tapping check to make sure your lifter hasn't loosened up. The geometry of that motor makes that front pushrod (the longest) susceptible to loosening.
If you're running solids, I've had luck with adjustable pushrods and solid plungers.

Strangler