Are the rubber plugs at the ends of the center stand tubes contacting the frame ?
Is the stand being retracted all the way by the springs ?
On the '81 model year bikes, the original center stand did not have a foot plate at the end of the left center stand tube, all of the forces needed to get the bike on the stand were exerted on the tang that is welded to the left tube .
I replaced my original stand on my '81 R65 last september, if I had known what a difference the later model made, I would have replaced it decades ago !!!!!