Welcome to the Forum from Alberta Canada. I purchase a 2014 Street Bob for my wife this summer and she hasn't indicated if there is an issue with the throttle being as you say jerky.To answer your other question, you would have to go to the nearest dealer in your area and have a look at the model for your country. The US models have different characteristics than the international models. There are always kits to allow you to modify your scooter to the new layout. One issue you will find though is the rear fender will have to be changed because there will be a large hole in it wear the rear light sits.