Well, so far we're seeing a lot of abuse, neglect, and ham-handedness.
A very slack, unadjusted camchain is likely.
Really keep yer eyeballs open on this one.
Posting good/clear closeup pics gets a lot more eyeballs involved.
BTW, the scrape marks on the bottom slipper's riser mounts, on the case, where the bolts fit, won't hurt anything. Suggest to smooth any sharp edges and dangling burrs from those scrape marks...