Car has much less pressure to front breaks then rears. When bleeding rears shoot fluid across the car fronts shoot fluid about 4 inches. Previous owner had 2 line locks installed, one on each line from master. I have no idea why. I'm wondering if he swaped the lines from master to proportioning valve??? Which port does front brake feed line go to and which port does rear line go to? I want to check if he has them backwards. I'm getting less pressure to front breaks.

The M/C port next to the firewall is for the front brakes if that is what you are asking (not familiar w line locks)

Looking to see which port on proportioning valve is front feed from master and which is rear feed from master