just finished a rupp hs40. new valves 1/32 over. seats cut with neway cutters. all new old stock parts except carburetor i used cheap china made. didn't fire it yet. maybe this weekend. a word of advice. if you buy a new old stock crank breather check the foam rubber element. i didn't. when i checked for compression it shot halfway out the breather in pieces. took half an hour to clean it out. hears some pics. anthony.