Just a few lines on the carb. It's great anybody can install and do any changes/adjustment needed. There is a big difference and change from the stock carb! I get instant response and my top end, it's outstanding. I received the carb from the Barnums! I cannot say enough good things about these people! They have taken there time to assist me in every way! If anyone out there is curious, I change the needle to the 19E and postioned it at 18 clicks! The bottom line this BRP rips!!! I would recommend this carb to all!! I hope the guys that were in the group purchase are having the same results. If I can assist anyone Please send me an e-mail! Thump ON !!!!