I have a 6 1/2 x 16 landscape trailer with 4 ft. walls and gate. I bought my first ZTR yesterday ('06 Cub Cadet 48" Z-Wing) and love the mower so far, but it hangs up on the spindles at the top of the trailer ramp. I can back up to a curb and unload and it's fine (no rubbing), but I won't always be able to do this. Anyone else ever have this happen? Suggestions on a solution?