I've got a plastic tank (from an 1100) on my bike. I know that the conventional wisdom is to store the bike with a full tank of fuel to minimize air and thus condensation and rust, but plastic doesn't rust. I realize that there is a fuel pump assembly submersed in there somewhere, but that doesn't seem to indicate I need to keep it full. Leaving it more empty than full (probably 1/4 to 1/3 full at this point, and I'm probably only going to ride the three miles to the storage unit between now and when I put it up) has the benefits of less stale gas in the spring and a lot less weight (and risk of spillage) when I pull the tank for winter maintenance. I will be storing in a non-climate-controlled storage unit in Vermont, so the bike will probably see temperatures ranging from below zero up into the 60s (Fahrenheit), if not warmer and colder. Any other thoughts?