On lower front of master cylinder are two ports. Front most port goes to the M port on the proportioning valve and on to the rear hubs thru the R port and the other port on the bottom, goes to the block that routes fluid to front right and front left calipers. Of the 2 ports on the master cylinder, the front one that goes to the proportioning valve has a much larger passageway for fluid to travel versus the lower port that seems to have a sort of brass restrictor in the cylinder where hard line connects. Is the small brass appearing fitting with the small hole in it correct?
Would think lot more fluid would be pushed to the front port with out any restriction versus the lower port with the much smaller hole for fluid to pass to the front calipers....