Hi Guys, am thinking of doing the mod to improve the flat spot on the NC30. Rick Oliver suggests a 1mm thick washer. However what sort of inside and outside diameter's am I looking for?

Suggestions on a post card as usual.

Thanks guys

From a stock nc35 washer - 12mm outer diameter and roughly 4mm inner diameter.

Ricks washers are pretty spot on and fairly cheap..

A plain old 4mm washer is the right size and half millimetre thick - two per needle is perfect.

Thanks guys.

I did look on Rick O's Stock sheet but he doesn't list them as individual items, just as part of kits, hence the question.