2002 with 1900 miles. IMS 4.9 gallon tank, otherwise mechanically stock. Discovered a leaking base gasket, and decided to use the silicon seal method as a temporary solution. I removed the tank, cam tensioner, starter, and loosened the oil lines before cleaning and sealing the problem area. Waited 48hrs and then reassembled. Bike ran fine, and seal seamed to work. I rode it home, then to a customer's house. On my way home from the customers house (~30-35 miles after reassembly) the bike just died. I was at medium throttle in 4th or 5th gear going about 50mph. It felt like i'd just hit the kill switch. Couldn't get it to even attempt to crank. The motor just spun and spun. Called for a pickup and got it to the shop. Pulled the wire and used a spare plug to check for spark, which it was getting. Figured it had to be fuel. I had removed the filter off the fuel intake line on the carb a few months before because it was giving me issues. I figured for sure I had some trash in the carb, so I took the carb off, completely disassembled it, cleaned it, and reassembled (this time with a filter). Hopes high, I tried to crank it, but no luck. Still spins but doesn't try to fire. I sprayed starter fluid in the air box, doesn't do anything. (Just spins) Took the carb off and sprayed a little starter fluid straight into the intake, nothing. Hand over the intake while cranking and you can feel suction. Sand blasted the plugs, confirmed they both get spark, but still nothing. I'm stumped, and all 3 of the guys at the shop are too. All three requirements seem to be present - FUEL + AIR + SPARK. Help please, we're out of ideas.