Jeff,
I just increased my StableLoads from 2 fingers to three. I haven't towed with the new setup yet.
I do use some spray on white Lithium grease on the StableLoads, as mine developed a squeak from the metal on metal contact.
They are really easy to engage and dis-engage while hooking up and unhooking the trailer. The back of the truck is lifted by the tongue jack while setting the spring bars on the Weight Distribution Hitch. I just go around the truck while it's raised and engage or release the StableLoads. It's part of my routine.