Your probably right, I was watching a Vespa wrenching video the other day and they said
the dealer charges $120 per hour to work on those things! To check the valves you need to
strap down the front of the bike, disconnect the shocks and lower the wheel until you can
get to head bolts so your $6000 bike is balancing precariously the whole time! I think that
was done on purpose to get you to spend the $120 per hour...