I just installed a GG UK Flywheel weight on a Pro 200 with the S3 225 kit (250cc piston/cylinder and a high compression head). Unfortunately even with the spacer it rubs on the inside of the left stator cover. There isn't more space I can add as the shift lever is already past the outer edge of the shift shaft.

Any other Pro owners have this experience and figured out a solution? I noted that the Pro 125 flywheel kit is half the thickness of this 225 kit.

Without the flywheel weight the engine revs to the moon but tends to stall easier.

Edited May 7, 201313 yr by seavoyage

Yes. The clearance is very small. On mine I heated up the gear lever and bent it out very slightly

The press on interference fit GG UK flywheel weight would not stay on. I prefer not weld it on and used Green Loctite.#680. Results: Easy to apply and holds the flywheel in place.

On the shifter: I plan on grinding some material off the lever to clear the plastic side cover.

Edited May 21, 201313 yr by seavoyage