You got it! Raising and lowering the 3pt once the subframe is installed, can cause the lower sway stabilizers to come in contact with the subframe if you do not get the proper width adjustment.
Bent mine once, then I figured it out. LOL
Now I've found a BH92 on a newer mx5100hst and I think I may just trade my tractor and not have to worry with finding a subframe. The next question is this...I have all my three point implements fixed up with quick hitch adapters. Will there be any problems with using the quick hitch on the arms with the subframe? Next does anyone have a bh92 operators manual on pdf file?