Iv got a H&R Ultra Slug Gun that I bought this year and finally got a scope on in it so i went out to sight it in and out of the 10 rounds i shot the ejector worked exactly 1 time, I had to run a rod down the barrel to get the shell out when i did this the ejector would pop back out. has anyone else had this problem with the gun?any ideas on how to fix it? im gonna try getting some oil in the mechanism tonight.