Hmm, the bleed hole that’s stripped is on the side where there isn’t much metal around it. I could probably tap a slightly larger size, but not much. I might have to have somebody add some aluminum around this area to stiffen it up so the tapping process doesn’t bulge it out. I might try your MCP idea if the 1/8th isn’t much bigger than the standard screw. (Any idea what the standard screw size is?)

Here’s a crazy idea: could I just seal up this hole for good, and instead of bleeding air at the caliper could I bleed it at the master cylinder?

How much would you charge to fix this yourself?

So, this is probably the cheapest solution possible: I was planning on having somebody reinforcing the blue area right? Turns out that given the lack of rigidity I tapped it with a hammer a bit and now the threads engage the screw’s threads. Perhaps this was the initial problem: not a stripped thread but the area was bulged outward.  It might not be sealed though, I’ll install it in a few days and test it. If I don’t see any leaking from this area, I guess its good for now. I’ll probably get a new caliper soon anyway just to be safe, but assuming this holds a seal I’ll buy that new set of tires that I need first!

OK, so my caliper is junk. I’d still like another option other than the arrows caliper though. How about using this bracket: https://cometkartsales.com/Brake-Caliper-Bracket.html

and using this caliper: https://cometkartsales.com/MCP-1375-SER-Rear-Red-Caliper-with-Pads.html

Or is this caliper too small?

I like that yours is cheaper, but is there a downside to the one you posted?