Hello you must be bumming

You may be able to glue down the cut if it is a flap, I used barge cement, then with 400 grit sandpaper, you may have to be aggressive with the sandpaper, I had a very small valley in my practice strop but it did not seem to effect the stropping action. I then use neatsfoot oil to finish off the strop and did a lot of rubs with a smooth glass bottle.

Good luck

crom