Had today the 2 year warranty check with my Slim S (110 inch). From the beginning I moored the ruching in the lower speed range, during braking with motor, (under 1500 rpm). So for example at 2500 rpm gas away and only slow down with the engine brake. The first measure was the purchase of a “super tuner” on advice from my dealer, who then adjusted the motorcycle. The effect was that the Slim S had even more power but the jerking didn’t get much less. I was then told by the mechanic that a jerking in the lower speed range would be normal. I then settled down with it until I drove with my brother’s Slim (103 inch) at the beginning of this year, which drove at the same test as described above up to under 1000 rpm as on rails and without jerking. The workshop then tried a lot but without great success. The latest attempt today, the stand gas increased to 1000 rpm. about not so nice with the high stand gas. Therefore my question: has or someone had the same problem. Are there ways to get the jerking away. Thank you for your help!