While weaving my current project on my AVL PDL, the shuttle keeps flying off the race. On the right side, it usually goes over the cord but ends up in box just fine. This has happened occasionally in the past, but usually only a few times in weaving a 10 yard warp. Most of the problem is on the left side, though, where it always ends up on the floor. And it happens 2 to 3 times more than the right side.
I can't feel anything wrong with either the shuttle or the shuttle race that would cause it to go off course. Once I believe I saw the shuttle going through the shed at an angle before falling to the floor.
Should I be waxing the shuttle or the shuttle race? Can you think of anything that might be causing this? Here's a picture of the cords for the fly shuttle, although it doesn't show the whole thing, so you can see how it's set up.