Al, I have had great luck with this. It is Permatex Thread repair kit, part # 765-1248. I get it at NAPA for $13.50
I have repaired final drive bolt holes, carb inlet threads, anywhere the bolt is loose and sloppy. It has held up great in both the finals and carbs.
It withstands chemicals and is good up to 128ft lb of torque.
Make sure you use a clean new bolt, clean the threads in the hole real well, then make sure you use plenty of the release agent on the bolt.
It says wait 5 min before removing bolt, I like to let it sit a couple hours.
You do not have the required permissions to view the files attached to this post.