Douglas made the stand lugs from 2 materials - they could be either bronze castings or malleable iron forgings - and they could be a mix of the 2 on the same frame!. You don't give any details of the damage, but the most common is that the bottom of the pivot hole breaks out - if this is the case, remake the missing part and have it SIF bronzed into place. With the lug repaired, refrain from trying to kick start the bike while it is on the stand. The excess loading often causes the cross tube to twist, making it almost impossible to get the pivot bolt out, as it then fouls the bottom rails of the frame.
Hope this helps,