i took my griz to a guy who did valve job, new valves new cylinder piston gasket kit, i had a burned valve and scratched cylinder, got the bike back, the valves r slightly noisy, any thoughts?

the damage on griz was due to aftermarket exhaust with no efi tuner ran hot during a jamboree, started burning tons of oil, its all rebuilt now with a dobeck tuner, the valve nois is slight, jus lil unusual