Update: called Sears for the part numbers found out the closest Sears Parts store is too far away so went to Ace Hardware they had one part but not the other a bracket. purchased the screw and tried to fix the cable holder clamp and realized there's a piece INSIDE the clamp that broke off so the screw won't work because there's nothing inside to attach it to... just finished a chat session with Sears Parts who will happily sell me the entire cable assembly but not explain why the piece inside the clamp broke off. I don't believe under normal use, this piece should have broken since it isn't a moving part. Ace said they have a heavy duty adhesive I can purchase, I'm going to do that. I think I've attached a picture of the inside of the clamp here for reference...is this normal wear and tear and just my lesson to learn? As always, thanks for your help!