Trailer Hitch Coupler

[CROSE]

The coupler on my trailer seems to be sticking when I try to disconnect it. I have an Atwood Hydraulic coupler. It has a small release lever on the top. It worked fine up till I had to disconnect it with my truck at a 45 degree angle to the trailer. I couldn't get the release lever to open fully. I finally just disconnected my receiver from the truck and then it uncoupled, but ever since then it wont release cleanly and I end up jacking the trailer up until the coupler pops off the hitch. Does anyone know of any adjustments that can be made to fix this?

 

[Nehalennia]

Mine sticks too, since new. I just jump on the bumper a couple of times and it releases. I suppose I could grease it more, but I haven't yet.

 

[CROSE]

I've tried that but the problem is the release lever won't fully open anymore. The lever feels like it's on a spring, or hydraulic.