The wellnut IS in the airbox. It will probably stay put. There is a moisture trough at the back of the airbox where it would have to climb up a short, steep wall to move anywhere. The back of the air box is sloped downward. This has happened before. I've never heard of a 14 ingesting a well nut but you should get it out just to be sure this does not happen. The well nut could bounce up and go down a throttle body if you hit a big bump or something. If you need to ride, just cover the wellnut hole with tape.
You will find it if you look in there. It could not have disappeared unless it went down the engine and you would certainly know that. I'm sure the bike would run poorly.
Disconnect battery neg.: 2 minutes.
Sifone tank: 45 minutes. Get as much out as possible. A half gallon of gas in there is going to be left over and that is heavy enough when you are trying to get that fuel line unhooked. I hope you have a good back.
Unhook fuel gauge, fuel pump connectors (PITA): 30 minutes by the time you figure it out and do so carefully.
Remove 4 fuel tank mount bolts: 5 minutes
Prop tank and unhook fuel line (another PITA) same as other PITA, 30 minutes. DO NOT force that. The lock is tricky if you have not removed before.
Remove tank and set propped up more or less level so left over fuel does not spill out of cap over flow: 3 minutes.
Remove three screws on RH access door: 3 minutes
Remove access door: 5 seconds
Remove other access door if necessary. That one has an air temp sensor in it that disconnects easily.
When you reassemble, make sure you don't overtighten the access door bolts. I believe I go a bit shy of specced torque on those. DO NOT use locktite on them or they will spin instead of threading out the next time you want to remove them.
Don't forget to tug on the fuel line more than twice when you reconnect the fuel line. If you get the whole thing back together and the tank refilled, that's the wrong time to remember to check the fuel line connection.
I have tutorials on all of these if you check the sticky, Rook's Tutorials in How-Tos section.
'08 MIDNIGHT SAPPHIRE BLUE Now Deceased