I've seen this before on a 53B , which is different but work the same. The chrome rod has been extended out of the rear bushing and that lets it lean down. Also the yoke shouldn't touch the idler. It looks , which it needs to be measured , like the rails are pretty well shot. I don't know the measurement but you can measure across four pins and it will tell you how much wear you have. The positive , the pads look good , and if the rollers are good you can do a pad swap to new rails , new segments and rock on. About 3000 would catch it. I am currently putting a new set of rails , pads and segments on my 943. Also front idlers. I will post some pics here if you don't mind. Also I can direct you to a place to get the parts if you need.