Somewhere I have a hand crank valve lapping tool. It works kind of like an egg beater and gives a "2 steps forward, 1 step back" kind of motion. In essence, it shimmies back and forth while advancing slowly clockwise.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250