I was all set to cut the grass and enjoy a beer on the deck wen done and this happened

[MossRoad]

A spare ring would have been a good idea if indeed there was a ring at all I realized when the replacement part was received that the flange/collar was what I thought was a retaining ring. Just had to remove the old part and smooth out the area, take some measurements and then weld the new part's collar to the QA plate. All went well,cut the grass perhaps for the final time this year.

Nice!