New life for an old 340 (stock stroke)

RAMM said
Had to take .0035" from drivers side and exactly .023" on passenger side to put the stock stroke, 6.123" rod with JE 1.804" CHT piston @ 0 deck. Passenger side deck height started @ 9.606" IIRC.

Say again? That's a big difference. Was the original crank bore also off towards the driver's side?