Thanks, I only plug welded the center with about 5/8' hole. When I replace the bushings and weld new keepers I will make the plates better and weld some outside edge as well. Hopefully to last a lifetime..
Along with the weld on the edges of your plate, a 3/4 inch hole drilled in the center and plug welding that - your metal "keepers" should stay in place. Need to have a 5 gallon bucket of water to cool the metal before the rubber is smoked.
I did not want to quench them in the water as to change the molecular structure and make more brittle but maybe on this application it is ok. typically it is a huge no no welding steel on anything structural and cooling rapidly.