I have the biggest HydraStar on my DRV and the same only with the "Marine" label on my Boat Trailer. Both are lightening fast!
As mentioned Grounding and supply wire size may need attention. BLEED those lines!!! Keep actuator about 3/4" from top with proper brake fluid.
Proper lubrication of caliper slide pins along with mating surfaces is very important.
Their customer Service is great. I was loosing fluid with no leaks found and brake pads were not excessively wearing on my Boat Trailer. Finally I discovered the leak on the actuator. Called them and in minutes I had a tracking number for a replacement unit. Received the new unit within a couple days with a return label. No more fluid loss!