In your case I would remove the burrs and apply a new splinterguard as suggested by others.
A few years ago I was making cabinets, and I couldn't get my mft3 dialed in, I rarely used my mft3 as a cutting station, and I always transported the 1080 rail with the hinge attached, so the rail probably got slightly twisted or something. I had a bunch of 1400 rails, one still in the box, and I decided to cut it to make a new 1080 rail. The piece that was left turned out very handy, it fits in the systainer, and I have used it a lot.