So Not a Newb here, I've owned this bike for 10 years, I have done all the maintenance, and mods to this bike myself, including rebuilding the Transmission, Big bore etc. I'm completely stumped and out of ideas now. Please Read and offer suggestions. So to Start off here are the specs of my Bike 2001 Suzuki DRZ-400 converted to SM, Owned by me since 2005 The relevant Mods for this issue. 434 Big Bore Kit, Hot Cams, FCR 39 Carb, Yosh TI Exhaust, 3x3, Free power mod, James Dean Jetting Last Fall the Bike ate a Stator (Even tho the loctite fix was done on this) Bike sat in my Heated Garage all winter. Few weeks ago I replaced the stator, put in a new battery, did basic maintenance (Changed oil, New Fuel, New Plug, Cleaned air filter, checked fluids, air pressure bla bla bla) Bike started right up on Choke, and died a few minutes later and WOULD NOT RESTART. After many attempts to restart the bike I drained the battery enough to give up and recharge the battery. This same issue happens every time I try to start the Bike... Fires right up than dies a few minutes later. Things I've checked/done. Doesn't matter on Fuel Petcock position (Prime or Reserve) Vent is attached to Fuel Petcock Fuel Petcock taken apart and cleaned, (Both the diaphragm and the fuel filters) Fuel line inspected and cleaned FCR Carb taken apart and Cleaned (A FEW TIMES) Floats are fine, cleaned all Jets, Needles, passage ways, and the little filter inside, I've done this more than once. (At first I thought it had to be a Carb problem) Timing Checked Valves Lash inspected (15 intake 20 exhaust) Checked all wires, and connections, Clutch safety was already bypassed Kick stand safety was already bypassed already had the "Free Power mod" But double checked the connections Fuel Screw set to 2 turns out. Another new Plug. As I mentioned Bike starts right up on first attempt. (With choke) but dies soon after, and WILL NOT RESTART. Just cranks over and over and over, I'm still getting spark when it dies and doesn't restart, Doesn't help if I spray starting fuel threw the air-box, it will back fire a bit here and there. I've tried it with the Fuel cap off (Vapor Lock) Tried with the Fuel screw at all positions, Tried a different Spark Plug. Kicked it, Hugged it, begged and pleaded with it, Even sat on it and made BRAAAAAP Noises..... I'm pretty much out of Idea's now.