I'm having a problem even the local techs can't figure out. I have a 2007 bullet ME with the AVL powerplant with 1300 miles, I did some mods, D slide carb, free flow exhaust, K&N filter, upgraded TCU. I can go 35 all day long but over that it burbles down and dies, will start up again in about 30 seconds or so. I switched back to the orig carb and TCU and it's still doing the same thing, already checked float adjustment, went through carb, checked timing and adjusted pushrods, techs checked out a dozen or so more technical and electrical things. anybody heard of or had this problem before? I really need to get on the road again.