I guess this is one of those stupid questions, but I'm frustrated on how to properly fill both tanks on the 990 adventure. I want to put the bike on the center stand and fill both tanks to the max. If I always park the bike on the center stand I don't believe the fuel should run out the overflows. The owners manual would rather you fill the right tank up partially and the left one to the max while on the side stand. Any suggestions would be appreciated.