Hi folks. I'm at my wits end on this one. The double axle horse trailer I have is simply not braking hard enough with its electric brakes. There is just barely enough grab when the trailer brake adjuster, which is brand new, is turned on to full braking. Even when using the emergency slide button on the adjuster, only a bit of grab is detected. I've tried the following to no avail.....1) adjusted the brake shoes further apart by turning the star wheel so that the wheels will turn only about one full rotation when spun by hand; 2) checked all the pertinent fuses under the dash and all are fine; 3) there is power for braking, running lights, and brake/signal lights at the wiring connector on the truck end; 4) there is power to all the trailer wheels and lights. I noticed that some of the brake wires on the trailer had broken beforehand, and I've spliced them back together the way they should be. I took one brake magnet to the store to compare with a new one, and it seems to be just as thick as the new one. So why am I not getting full grab such that the tires should lock up? Any ideas/info you could supply would be greatly appreciated. Thank you.