A friend of mine gave me a long twisted cow horn to make me another powder horn out of. After looking at it I noticed that the horn appears to have a few areas where it looks like there are air bubbles under the first layer. I can push on them and they do not mash down however looking at the end that is cut off at the base one can see the layers that have delaminated there at the end. If I remove an inch from that end it will be fine however the spots I described in the horn are all over it. Should this still work if I finish polishing it up?