Well, for the most part this was a pretty easy install and the bike runs great now. I recently gutted my stock muffler and left in 1 baffle. The bike sounds great but I needed to shim the needles to take out the flat spot it created. So I got some #4 washers from lowes since my radio shack sucks and they dont have anything even close. Well the inside diameter was just fine but they were too big on the outside so I had to take my dremel tool and gently shave some material to fit them in the slides. I took good care not to lose the little o-rings under the diaphragm covers but the very last one disappeared without me ever seeing it. I reassembled the bike anyhow and put a dab of silicone grease where the o-ring should be. The bike runs fine and I drove it several miles. I did order the o-ring but of course it wont be here until wendesday. From what I can tell that seal only seals a vaccum passage for choke operation, is this true ? I rarely use my choke this time of year so if that is all that passage is used for then I wont be worried about driving my bike until the seal arrives. Like I said the bike seems to drive fine for now but I just want to be sure before putting any miles on it