Is it still the accepted practice to grind XPAG/XPEG valves and seats to an identical 30' angle rather than do a 3 or 4-angle cut with a 1' differential between valve and seat? Don't want the machine shop to use big block Chevy tactics on my delicate MG. ;-) Thanks! John Deikis -- *Running the Rallye to Reno in a '53 MG TD* www.kidsCURE.blogspot.com