I have a hr196 alcohol carb on a sudam 125cc the problem is it will not fire or refire after 10 min or so with out cupping/choking carb .The carb has had new seat gasket ect and pop off is set at 13lbs holding 11 .Is this pop off to high causing a no fuel signal upon start ? The carb running sounds good and crisp but the starting of it ? Any help would be greatly appreciated