Make sure the fire dept. reports to NTSB and yamaha If they won't he should. Glad all is okay well except the bike. As far as puke from the carb
. It seems to me that it is a two factor one the carb bowl is two small and in a thermal heat sink. IMHO
after brain storming with MS1700 who tried every option. The cure is run pumpless see tech section, and a large volume air kit ie BAK
K&N Mr C mod or Any K&N you can fit there are a lot of airfilter options.