K1200S Fuel Tank Venting
I've recently noticed that my K1200S will build up a negative pressure (vacuum) in the fuel tank. In fact, the bike has actually stalled twice, but starts immediately, once the cap has been opened, thereby venting the tank to ambient. This is the second K1200S I've owned, and I don't remember this characteristic before. Is the tank vented to ambient and is a negative pressure normal, or is the vent pluged? I should add that the problem is made worse by having the tank full, which one would expect as the air volume is decreased. Any thoughts?