I shared the step by step procedure some where I dont remeber I think in one of my threads... actually you have to place a cushioning under the Bars and above the Plate of "ainak" ....
I told you Vibration is because you havent added weights on the end of Bars and secondly may be you have done cushioning improperly if you share picks then may be I can give you some tips to improve..
whizz is better cleaner then STP and will clean all the carbon from inside chamber and piston... but had less responsive-ness the STP.