disc brake delay

All disc brake actuators have some delay while they build pressure. Hydrastar is supposed to be one of the quickest. But an additional problem is that they all have a voltage level below which they do nothing. Google for my thread "Disappointed in Disc Brakes." https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29930221.cfm
I found my main problem to be turn on voltage with light braking. Because my 2012 F-350 did not have the "Low/Med/High" setting I had to resort to a Prodigy P3 to get the actuator to start working on light braking. The "Low/Med/High" setting, as I understand it, determines how aggressive the voltage back to the trailer is on light braking. I would try High to see how it affets things. After the brakes are set in, I would be surprised if a 9 setting didn't lock up the brakes.

Controller at 9, you have a problem. My drum brakes were 9 and I installed disks and now run 4.5. There is another setting on the brakes in the F350 beside the gain or EOH. I would have to look in the manual or play with the control but it lets you select low/med/high for brake effort.

I concur, the factory does not always do a good job of bleeding the lines.

I have a hydrastar pump as they are supposed to be one best with minimum delay. I have a Prodigy P3 controller and have not really noticed any delay on mine. P3 has a boost function to have the brakes come on a bit stronger right at the beginning. Not sure if the Ford controller has a similar option.

I would suggest bleeding the brakes as my only suggestion. Although probably a long shot on a new trailer. Process is a bit tedious due to the small reservoir on these pumps.

Two to three second delay is completely unacceptable. A gain of nine is unacceptable too.