1978 Johnson 140hp running rough. Need advice

[Bman2895]

Ive had people say you just beed to smooth out the high spots and run it? And they are abundant, but if i can reuse this set of heads id rather.

 

[jimmbo]

Those pits will also likely fill with Carbon, creating Hot Spots leading to Detonation, which I suspect had something to do with the last Ring Failing. I suspect that this engine has had this Dance before