I finally got my bullet all reassembled, and now I can't start it. Spark looks good but no combustion. After running the battery low and then kicking for a while, I noticed there was a pool of fuel on the ground. So I suspect I screwed up the carb somehow. Or maybe I have the adjustments wrong. Compression is definitely good as I can't really kick it past the compression stroke without using the decompressor.
Here's everything I did. I know many of these aren't applicable but I figured I'll list everything just in case.
*replaced oil & filter -- added magnetic drain plug and magnet inside filter
*replaced alternator (both stator and magnet rotor)
*replaced 500cc iron barrel with 535cc alloy barrel
*replaced wrist pin and piston with forged 535cc versions
*added 2mm spacer below barrel
*replaced copper head gasket with composite gasket
*decoked head
*valve job (didn't replace any valve components)
*cleaned spark plug, checked gap (.022)
*stripped rust out of gas tank with bb's and vinegar, washed, dried, and sprayed with a light coating of penetrating oil, then filled with high octane gas.
*disassembled carb & cleaned thoroughly with carb cleaner
*replaced all jets
*checked float height (26mm)
*screwed pilot air screw in all the way, then backed out 1.5 turns.
*screwed idle adjuster in all the way, then backed out a few turns (didn't really count)
Not sure what I could have messed up in the carb. It seemed pretty straightforward. It acts like it's not getting fuel though. Maybe I put the float in upside down? Is that even possible?