With a 3' length of 1/4" flat bar G clamped to the rear sprocket and a short length of the same bar clamped to the gearbox sprocket, i firstcheckd that the two were running parallel then measured the offset.... 3/8"
I turned down a piece of steel tube to the same inner and outer diameter as the standard sprocket distance piece but 1/4" narrower then turned the sprocket round and fitted it with the 1/8" dish in the way..... Jobsagoodun!!!!
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