Quote: Originally Posted by
BDCarrillo 
Straightedge and feeler gauges. Do the straightedge diagonal from the lower left corner of the head to the upper right, then upper left to lower right, then straight down the middle. At each position try to wiggle a feeler gauge under the straightedge.
Most machine shops should be able to check it also
Ok thanks.
What about valves guides? Do I need some?
