No I checded that, over worse bumps, and the kickstand has to be almost to set position before it kicks out. It was mostly a conjested city driving and heat/smog issue if anything. It hasnĀ“t done that since, and never on on a cool evening.... The Single cylinder is using the same TPS as the Boxer Motor, but the cranckshaft fix for the Single Majesty is not working or I have a Skyliner 400/Motobi velvet/or whatever this engine was tested on originally.