Haaa...I just mentioned that "little problem" in another forum. I'm up to two times now. The top of my BX-22 ROPS is about and inch too tall for the doorway...and it looks it now, too. Time for some touch up paint.
Maybe I'll devise some kind of electric eye that sets off strobe lights, red flares and fireworks when the front of the tractor clears the door. <G>