Caliper leak At Bleeder Screw

Are you positive the new bleeder screw was machined well and of good quality? The only reason I ask is because we oftentimes get brake line fittings that aren’t worth a damn. I couldn’t tell you the number of times I’ve had to try two or more new brake line fittings before one correctly seals. It’s gotten to the point where I won’t buy my brake fittings from the cheapest suppliers anymore. I’d try one of more bleeder screws before scrapping the caliper.

It’s issues like the one your facing that make me wish I learned the mystic arts of being a machinist. I am certain they could drill and tap in no time at all but, would probably be more expensive to hire a machinist versus buying an entire new caliper.