I had my backhoe installed last spring and used it all summer. In checking the Hyd line routing for mmm lift, I found that my backhoe return line was rubbing in three spots. I could see the spots through the back and looking through the top of the right tire/fender area. The installation instructions have it installed correctly and it is free hanging. I pulled the plastic cover off where the 4WD selector lever is (two Bolts) to better inspect the rubbing areas. I only had some thin rubber and used zip ties for the 3 areas that were in need of protection. It was a bear getting in there to work, but I got it done.
If mine was rubbing in the short time I have had my BH, yours maybe worse? It maybe worth a quick check. I did not take a picture. If you want one, I will try to get one today.