Grubee GT-4, NT carb, 2k on motor. Removed motor from bike#1 07/2009. Was running strong. Finally installed on Jaguar. Motor starts easily but eratic idle down. Choke at idle will not kill motor. No problem before. Both ends of manifold tight. Spray the top of carb and it will die. OK, so I seal that up. Still not right. Coming home 2.5 miles and exhaust went cherry red. So I start spraying things again including cylinder base, etc. Choke on, motor running, spray the tickler and it dies! Spray fluid was probably running down to tickler. Repeated several times to confirm it's the tickler. What the?