I've had a few annoying issues with my Uly. Rear wheel bearing, drive belt chaffing the guard and mostly the surging/backfire and at times even dying. They replaced a few parts and did a tps adjustment and seemed to make it better. At times, on idling warmup, it has died. Starts right back up, but that never happened before. Today it was warm, about 96deg F, and pulling into my driveway after my 25 mile commute, it died. It wouldn't restart and I didn't hear the fuel pump. After several tried, it finally started. Has the Uly had any fuel pump issues? If it happens again tomorrow (forecast near 100 deg) I'll have to bring it in again. Still love the bike though.