I adjusted mine to make the green guide wire tight, but NOT straining on the screws. This did the trick. Door slides in nice and easy as it did the first two years.
It was on my first camping trip this year that I noticed the door did not want to go in, and I ended up mounting it half-***ed.
If you have an older style, with the grease make sure the plate that contains the adjustment screw, does not come any closer than an 1/8 of an inch to the gear. Probably something similar to the new style too, if it uses a plate.
And I believe in the next few days, I will be ordering a manual lift and chucking the power winch