Stihl 051 crankshaft lateral play. have 25 Thousands play total, -.012 each way, Downloaded stihl RM but no spec. This saw has a roller brg on clut

[chainnut]

first time posting. tried to put all in title. also oil pump crank seal bad, not damaged by pin from oil pump drive. found one crank seal left in world so if damage by crank movement, expensive boat anchor. also this is early saw with smaller5 crank seal, 42mm x 30mm any thoughts. PS, am retired auto tech support, tech training. Currently buy, fix and sell old saws, keep interesting ones.