Last summer I put new XT hydraulic discs on my bike. Can I lay the bike (on the left, natch) in my pick up bed with the bars turned 90 degrees to the right and not get air in the lines? I have a hard tonneau on the truck, so the bike will be very near flat, with the front wheel removed. I drive miles of twisty roads, so there will be lots of sloshing around and lateral Gs pulling on things. I was thinking maybe I could prop up the top tube and stem with a large piece of foam. What say ye?