Problems with Demco Autoslider not hitching

I have this hitch also but have not had any problems. The technician at the dealer told me to only use silicone spray on the moving parts and contact surfaces to avoid attracting dirt. Like a previous poster, I hitch up with the trailer slightly low so the pinbox rides up the plate, like a ramp. I am curious, so please report back to us on how this works out.
JK