That front bleed screw should be right on top.
My P.O.L. Has it there when bolted in.
....pic.... If its not dead 12:00 when bleeding it can creat an air pocket in the caliper piston.
One good thing about the one man kit is that you run a clear hose from the bleed screw and run it to the accumulation jar that is sitting at a low position.
You can tell when all the air is out just by looking at the clear hose
Instead of clamping brake hose you can just plug one front port at a time and test, leaving one circuit installed. The plugs should of come with the prop valve.
A bit more work but you might be able to tell if its the front left or front right that's the issue.