Had the trike almost 2 months. Went to get gas today before our group ride and had a hell of a time getting the gas cap off, and then back on again. Almost like the thread was stripped or something. Hadn't had any problems before. When we got to the dealership to meet everyone, I started asking around. Turns out the service manager tells us it's a known, new problem in the Southeast U.S., and this dealer had to replace maybe 10 gas caps just in the last few weeks (warranty fortunately). Kicker is, the new cap works fine, but there are no guarantees it won't eventually stop working too as it is supposedly the exact same design as the factory installed cap. They are guessing it's some combination of the fuel mixture and weather in this part of the country distorting the plastic threads on the new cap. H-D is aware of the problem and working on it.