The 2 large problems to the RB30 relate towards the oiling system and crank collar. This isn’t specific to only the RB30 series, since the RB20/25/26 also have mentioned issues with the oil pump and oiling systems. They all have problems with this difficulty (early RB26 only).Anyway… If a crank provides a 0.02mm runout, Which means it takes up … Read More