Yes there is room for the radiused sides, and the damage was to the plastic part holing the bearings in place. I have tried without success to repack the bearings but even with carefull assembly its got very tight spots.. and the plastic sleeves on the lower part are damaged..

Yes I understand my switches wer'nt fail safe and seems my soft limits didnt help.. As far as Im aware I think one of my sons had been using the machine or maybe from a broken wire on the switch ( not set up diffrently) ? An in my error I didnt check things before I used it (rush job) :(