I attached a question about this gasket on another thread (which I couldn't find), and Andy said it should be siliconed & would wear in. It was put on last August-September. I called Inland & told them the year, etc. of my trailer. I guess I can wait for a while (not going camping anyhow) and see if he sees this thread. If there isn't any response from him, I'm going to go ahead & cut it. It's better than ruining the lock.
1964 Bambi II
1988 Avion 32S