Key word: Should.
My bike has a vacuum lock issue when I ride it in 85f temps, park it, and restart about an hour later. It doesn't like to run for the first 30 seconds or so. Nothing will fix it, period.
Things tried:
Many many tunes
Different injectors
Removed check and reattach vent lines
TPS voltage is perfect
TB balance is perfect
Secondaries Removed, all at 100% and part closed at idle.
EVAP removed
Tried different gas stations and octane ratings
Stock, 2780, and RAMAIR filters
The only thing that stops it is parking in the shade, and if it's over 90 it still does it.
I should say, it hasn't happened since I did carpenter work, but it's also not been warm enough to trigger it.
Just a quirk of my bike.