All they will check it with is a strait edge to make sure it's not warped and a flash light to see if light is getting through the valves. If they have to work on it they may need it stripped but they have the tools to remove the valves.

Dennis

95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.