Grinding shims is a major no-no. The grinding marks can cause the shim to shatter at rpm, if that happens you get to find out how much a new top end costs. The guy that does that is not only _really_ cheap, he's not too smart, either....
"You must be fast, 'cause I was haulin' ass when I passed you."</p>
"You must be fast, 'cause I was haulin' ass when I passed you."</p>