I’ve acquired a 13 T650 for basically free. Which still may be too much. It’s got a few small issues which I’m not too concerned with, but I am new to tracked undercarriages. The tracks have seen better days but I’m trying to stretch things as far as I can on the farm. All the rollers move fine and the sprockets are fairly new looking. But when I view the tracks from the back they angle in at the rear idler. As well I get a popping noise in the front of the frames when turning in reverse. Any guidance on where to start. Or just run it till something gives up?