zwaddington, Welcome to the forum. As a newcomer to the Hi Lo, I'd strongly recommend you scroll down on the opening page, to the reference library. Under "Hi Lo owners manual" you'll find the word "sticky" click on that and you'll find 32 short videos covering the systems on the Hi Lo. Even how to service those systems.
Let us know what you find in regards to the trouble your having, that's how we ALL learn.
When you go to the door of your "fully" raised unit, look at the rubber seal and let us know about how many inches from full up are you. Distance between the rubber seal and the upper trim. If it's an inch or so, it could just a minor adjustment to the cables. That we can tell you how to overcome in simple steps.
2703 Tow Lite
Bonita Springs, Fl. &