Well, I have the bottom half of a 1998 T-Cat engine on the bench and was thinking about drilling the holes for the grease fittings on the upper half when I said to myself, self why don't I just drill (3) 3mm holes from the balance shaft area into each cyl's crankcase. (see pic disregaurd circles) What do you think? Would there be movement of gas/oil between the case and the b/shaft area? Everthing is sealed so I don't think that would affect A/F mixture. Is there a down side. Everyone feel free to chime in.