Thanks a bunch Two-Wheel for the fast reply. I can't disagree, in fact I originally sent the wing into the shop because I thought I had a fuel pump issue and I never owned a bike with a fuel pump before. However, they were able to get it running just with a spark plug change (obviously I'm growing senile for not thinking of that myself) so the pump is probably OK (although it could have decided to konk out in the meantime). I can't believe the carbs were rebuilt with defective hoses, but if they were would I smell fuel when I crank the thing?It certainly sounds like a fuel starvation problem. Fuel pump problem perhaps. When the carbs were rebuilt were the hoses replaced or checked for cracks or leaks?