[_Ogre]

ogre has no problem posting your thread here, as few builds in the pre-47 section i think they should make it pre-59
i feel your pain. truk had brake problems that kept it in the barn half the summer
i ended up rebuilding/modifying the whole rear brake system to get decent pedal

overall your plumbing looks good, nice bends and routing, did you ever have good brakes?
as for the split: hydraulics don't care what the path is to function, mine split similar to your and worked fine right out of the gate
from the residual valves i'll assume you have rear drum, front disc.
both front and rear appear to be 3/16" line. 1/4" lines are recommended for drum brakes, 3/16" for disc
3/16" brake line slow the flow to drum brakes, makes them apply slow, drums need the 1/4" line
did you bench bleed the mc? some mc can be trouble to bleed on the vehicle
is the mc disc/drum?