Originally Posted by gtsum

reset your needles back to stock positions and put a new plug in there. Get her to run and warmed up and start tuning on the LSN until you get a steady idle, good take off, no bogging, etc, then tune the HSN. This mill likes a leaner bottom and slightly richer top end...you need to tune it with the LSN to get best results. You will know you are there when it will idle good, take off with a slight puff of smoke and pull through the RPM's with a good smoke trail. It will temp around 180-210. Once you get the LSN set right, it tends to keep a tune very well