This may help you out slinger. When you are tuning the idle (slow) jet, the rmp's should drop,and the engine should give that pop-pop-poping sound as the engine is braking. If your jet is too lean the rpm's will stay high with the throttle closed, and you will feel NO braking effect. If the jet is too rich it will sound as if you hit the kill switch, and will stutter when you reapply the throttle. I found a neat trick for opening the jets from a top outboard mechanic. Welders torch tip cleaners. They are accuatly wire files in very exact diameters. You start w/ the one that fits your jet, give it a few swipes to allow the next size up to fit. A good set of these is about $30.00 and w/ them you have every size jet you will ever need. Last week I was opening mine and went too far w/ the idle so I found a sewing needle that was smaller than the jet size, put it in the jet and melted solder into the jet. I pulled out the needle, and started again w/ the files until I got the size I needed. I own 3 scoots right now, and I am ALWAYS fooling with someone else's, so buying boxes of jets for all sorts of bikes don't make sense for me.