Does anyone know a better fix for a stripped drain plug?This time when I changed oil on my '92,I noticed when I pulled out plug,that it had been drilled and heli-cored.Core came out with plug.I installed another same size heli-core,but its loose at best.Am going riding in mountains this weekend,so was just trying to get by.If I drill to install next size core and bolt,what about metal shavings in case,trying not to split case.Any ideas or better alternatives?