Thanks Bob .
wipe the inside with a rag or paper towels ?
open anything else,or do cleaning or
service,put a rag or other item
to keep anything
from getting into air box,,,,,,,carbs ?
remove the metal screen clean & re-install ?
Have you tried without any air filter ?
leave the airbox open and something
crawl in ?
Did PO re-jet with a restricted air cleaner
in the box ?
All the ??? may sound silly but strange
and un-explained phenomena happen
I have a mysterious invisible force that
when "nobody" did it gets the blame.
"The Amarillo Phantom" he arrived about
the time I got together with my wife.
When my daughter came to live with
me he became even mischievous.