84 250R crank

[plumber]

I have a mugan 350R conversion jug and head, the stroke is 68mm. my stock 250R stroke is 64mm. i would like to use this top end but i need to shave the cylinder down?(which i dont want to do) or change my crank i cant seem to find the crank i need. does anybody have a clue where to get one? or have another solution to my problem. thank you

[NoLoad]

Best I remember, it was a Mugan 360 kit. If you can find an old 3wheeler magazine, it should have an add for it in it. Think you had to send the engine to somewhere in Cal. to have it built.

[plumber]

350 was a misprint. sorry. Im being told i can shave some off the jug to make it work only i will lose some of the power that comes with the longer stroke. i was trying to mabey get conformation of this by somebody here who has done the same thing?