I should have thought of that, but good to know as I might just get another one in the near future.One thing I did for my Extruder on my CR-10S (since the spool holder is mounted on the controller box) is to
add a "small metal jacket" to the input hole where the filament goes in.
To keep the filament from wearing down the plastic entrance hole, I put a 1/8" rivet jacket (with the center rivet part removed)
in the hole. This gave the filament something to rub against during a print and not wear out the hole and easily replaced if needed.
I mostly use PLA which is fairly smooth, but friction will happen.