I am repairing a red Sig Four*40. I put a small red hole in the front of the nose. I was able to fill in the hole with balsa fill material. I had to remove about a 1-1/2" square of the covering to patch the hole and now I need to buy some matching covering. Any ideas on where I can get a small amount of covering which will match? I hate to buy a whole roll from Sig for such a small hole.