Everytime I get my tune up a little off ie:to fat or timing retarded( I'm a new guy but I'm learning)It results in leaking exaust valves. I'm currently running Manley stainless valves.
The question is: Is there a better type of valves or coating that can be put on the valves that would be a little more forgiving in the event I get the tune a little off in the future?
P.S. I'm changing the valves anyway.