That is very interesting. I just took my filter off to do some headwork and thought the previous owner had been sloppy. I thought, as I took it off that at least I would put it back on straight. Duh
I wonder if the angle is with the exit tube uphill from the lowest point. This would aid in collection of heavier items since they don't want to go uphill. Thanks, I don't think I would have checked my manual for it's installation.
