Problem installing a Maz crank-Rally200

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Hello all,

got my crank inserter through today. Trying to swap a Femsa crank for a PX200 Mazzuchelli crank into a Rally engine. New bearing installed as it should be. Clutch side oil seal in. All good.

Come into problems pulling in the Mazz crank. Its hitting the rotary pads either side when you rotate it...and damaging the soft pad.

I dressed the pad and tried again. Same result.

Probably should have done this at the start, but measured the Femsa crank diameter 97.2mm. Then the Mazz crank 97.8mm! a whole 0.5mm bigger.

Is this normal? Id hope not. The only thing I can think of doing is to carry on 'dressing' the rotary pad

Any ideas folks? or anything to check?

Thanks Kevin