I have a Homelite Super 2 that gets a lot of use around the homestead as a limbing saw. I pulled the spark plug to have a look, and the threads are pretty banged up. Now when I screw in the spark plug, it won't stay tight and jiggles around like a bag full of smarties. Surprisingly enough the saw still starts and the compression is good. I did put on some blue (removable) Loctite so I can put it right back to use, but long term, is there a good permanent fix for the saw?