I Finally got around to gearing the Puch & the E50, slapped a 16 tooth so it's now 16x45. Still really responsive, does 30mph easy, cruising at quarter throttle. Does 40mph and manages the hills well. So that's it I'm happy with that not going to mess about with it now. 40mph was my goal and to get up the hills that we are surrounded by. Need to sort the jetting though as its still to rich.