there have been a few different discussion recently concerning repairing stripped frame lugs for the centerstand for the 70-80 standard twins. One of the methods I used in the past when the damage was not too-too bad was a 7/16 fine thread bolt. it was easy enough to drill out the damage threads and tap to 7/16" fine thread and bore out the centerstand bushing so the bolt will pass through. BUT once in a while you get one that is just wasted. This 1975 R75/R90/6 belongs to a friend and 23 years ago I put TIMESERT inserts in the frame lugs which fixed the problen foir about 18 years or so. What we suspect now is that the use of the Ride-off stand has continued to decay and deform the lugs, because when I pulled it apart a few weeks ago, they were trashed. bent, stripped out (again) and rather than weld on new lugs, I came up with a better solution. (I actually did this on my R100S/RS several years ago and the current owner has no probs with it. Firts pic is of bent lugs.