On a cold start she fires up perfectly. After being warmed up or riding for a while , I will turn her off. Then when I go to restart is where I have the problem . She will bog up and down then cut off 1 or 2 times. If I blimp the throttle a couple times before she dies then she stays on then eventually smooths out. I suspect fpr. I did the check on the vacuum line. No fuel comes out. I dont have a gauge to check pressure or know how to. Also if I change the 0 to a 10 or 15 on the power commander at 1000 rpm 0 throttle, she starts a whole lot better and smooths out faster but still has a slight problem. Spark plugs were just changed and K&N filter cleaned. F1 light is not on either.