im wanting to put a 4-mill in my stock cyln bike. problem is that its been drag ported. not by a big name builder,so... im dont think the guy that ported them knows how to port for a 4 mill. on a nother forum ,i was told i could use a spacer plate instead of having it reported, and that would help. the best is to have reported...yes i know. but nobody wants to work on somebody else's port work. what do you think ??? could i go with a spacer plate or is it just going to be a waste ???
thanks