I recently recieved my HMF Utility Pipe and K&N Filter in the mail for my 2007 Rubi... There were no instructions on how to install the jet and i have an understanding of how to install the jet but i hear a lot of talk about removing the needle and such. What else really needs to be done?? I have clipped by diaphragm spring. Are there any other adjustments required? Also i hear a lot about 170 jets and this pipe came with a 165 jet... is that correct???