I have sometimes glued a thin layer of nylon on the backside of a welded tab.........then paint.......and add a nylon or rubber washer between the bolt-head and guard.
That reminded me: I did this to mine, too. Actually, drilled it out bigger when it first cracked, then put a rubber grommet thru it with a shoulder bolt and washer on the top, holding it sorta loosely. It never gave me trouble again after that. Mine didn't seem to be aligned very well, putting sideways pressure on the rear tab when the front bolts were snugged down? I seem to remember bending the 'middle' bolt's sheet metal (on the guard) in or out one way to try to align the rear tab better, but didn't like how it came out, hence the rubber grommet thingie...I also remember 'ovalling' the front hole, using a 1/4" drill bit in an electric drill (Hand mill?), but don't now remember the 'why' of it.
Boy, Ron, you're sure stirring up the memories with this one!
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