brant are you really questioning is mounts? Everyone know they are vastly superior in engineering terms.
No – I'm questioning the logic of early disc brake calipers that used 0.1mm shims to acheive pad/disc alignment.
That was rubbish.
I'm a big fan of (as I said) "post-mount adapted" brakes – ie: post mount caliper with an IS bracket, as it were…
my disc tabs had paint all over them so i'd factor in a trip to the lbs to be on the safe side.
They're *usually* masked before painting. So sorry about that.
I'm pretty sure the manufacturing process of the shell includes a quick face up and we're all capable of removing any residual paint, I'm sure
Actually, aluminium frames (not steel ones) are welded up with an unthreaded BB. The threads for the BB are then put in by machine, usually (I think) after heat treating (but before paint).