1989 780 rear camber specs please

So I paid Tread quarters almost $90 for an alignment to specifically set the rear camber since the left rear tire wore through the inside to the belts and they don't have a spec for it. The ozvolvo green books won't open on my Droid phone so any help would be appreciated.

Thank you so much I promise to buy some parts from you.

So just a little update, I was thinking the new tires looked a little chunky, turns out they mounted 215/60/15 instead of the 205/60/15's that were on the receipt. It's at the Tread quarters right now, hopefully also getting the camber set properly along with the correct tires installed.