Hi A10,
Another approach is to make up a good solid tube that will fit between the stand plates and weld this in the correct place, I made mine from 3/4 round bright mild steel drilled through 1/2in
This provies a long bearing for the stand pivot, I drilled and tapped a hole in its centre for a grease nipple.
In normal use the pin wants to bend in the centre, this prevents that happening.
I made a new pivot pin with a head on one end and a thread on the other, nipping up the nut on this gives the stand a little squeez, prevents side play and keeps the stand on the frame stops!
HTH
Regards
John O R