Yeah...it is a noted problem, and has happened to others here on this site and other sites I've read. I inspected mine two years ago, after reading about this issue here. I found my right peg bolt loose. Assumed it was only that, and tried tightening, and it immediately snapped off. There was only about 1/3 or less of stressed metal holding it. I was doomed if it hadn't been found. I was a stander too - but no more.
When I went to the shop, they were out of stock, but had the rear mount, which was the same but with a slightly longer bolt, and MUCH cheaper (Only $5) as they noted. I took the rear, cut the bolt to size length, and used it successfully. Have had no problems since, but regularly check them, and I do NOT stand any more. I have also wired the bracket, just in case.
Some guys with tools and capability, drill out the old broken weld bolt and replace it wth a bigger case hardened bolt and nut. A tap weld to hold in place, and some grinding is needed too to clear the flip up flexability.