Diagonal dual disc pad wear

The post is from 2005, but not the first to address this unusual wear pattern.  I have photos and may add them later.  I have no idea why the text wraps this way.  I just spent an hour trying to fix it.

Hello Duane,

I am a former Swissair mechanic and motorcycle enthusiast. About two years
ago I did a great deal of work on a friend’s ex- Swiss highway patrol BMW
1000cc twin. I only wish I had known about your site back then.

Presently I am working on another fellow’s 1979 R80/7 that had been stolen in France and recently recovered. I am referring a great deal to your site for its’ excellent technical tips. However, I was not able to find any
information on the twin front disc brakes. Luckily I have enough experience
in brakes of all sorts that this particular job does not present any great
problems.

This morning, when I removed the brakes I saw something so unusual that I decided to write to you. I think it might be relevant enough to perhaps post
on your site. As you likely know the R80/7 brake calipers pivot on an axis
that has two eccentric cams. On both left an right side the calipers had
seized some time ago and the brake pads had actually worn diagonally. In all my years as a professional mechanic I have never seen brake pads worn in such a potentially dangerous angle.

With your permission, I would like to send you a few jpegs of these
calipers and pads. You really must see them. There are about 6 j.pegs in
all.

Thanks again for you very professional and informative site.

With best regards,

Eric Mowrey
Bursins, Switzerland