Hey,

It is annoying. It is the 3rd time I open the valve cover after 500 miles and the clearances for exhaust rocker/valve is 0!!!

I did a head cylinder job and replaced the exhaust valve seats by a machine shop.

i changed the eccentrics, studs and bolts. Same old rocker arms.

The clearances on intake valves are ok.

What the hell. That's about 3* 0.25mm gone! that's about 1mm!

Is it the seats or the eccentrics?