My master link failed today. Naturally being a new first build I don't have any replacements yet although they are now on order. The problem I am seeing with the chain they use is that it is too heavy for bike shops to carry and too light for the motorcycle shops. I would like to pose a question to all of you machinist/engine builder types out there. Short of a total redesign of the engine would it be possible/feasible to convert over to a 420 chain? That seems to be the lightest that the local motorcycle shops carry. I suspect that it wouldn't be cost effective but the frustration factor is really high right now so I am looking for options. Thanks!