Just pulled the barrel off my LRP,new McGowen shipping tomorrow. When I removed the recoil lug I noticed it did not have the indexing pin. I'd like to reuse it since the stock is already bedded for it but how will I keep it from turning when installing the barrel? It almost looks like a PTG w/parallel sides. The other lg shank lug I have has the pin but looks like a regular tapered one. It's also longer on the bottom so if I have to use it I'll have to hog out the bedding and start over. Any thoughts?