Maurice,

You will probably be satisfied with it as-is. If later you feel the need to alter the engine, consider installing a LA .40 piston/cylinder. On the LA, they eliminated the baffle port, probably as a cost reduction. I believe it is a drop-in fit.

Good luck.

George

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Unfortunately, the LA .40 sleeve/piston are different than the FP .40 and cannot be used as a drop in replacement.
DennisV