This thread looks empty. Did you resolve the issue? My first thought would be overall service and maintenance. e.g. have you had the valves inspected/adjusted if you have substantial mileage? My next guess if the bike is in decent mechanical condition and the service is up to date, would be to do a fuel pressure check. The fuel pumps are pretty competent these days but it can be a pretty straight forward test with a trip to harbor freight. The quantum and caltric pumps are cheap but I have personally had some spotty reliability and fitment problems in the past. Interested in what cam of it in the last almost full year.