need help asap - nitro question
friend and I are running the 8th scale's today and he has a question. is it okay to run 30% in his OS .21RZ(VO1B) without shimming the head? it is setup up for 20% right now. Will richening the needles be sufficiant? or will shimming the head be required? I know my OS .15CV-R's instruction manual says its okay to run up to 30%, but he doesnt have his manual with him? A quick answer woud be appreciated, since we want to get to the track, here in a few hours.