If the glass in your window is double pane, check out the local window companies to see if you can replace it with Low e glass, which will not only cut the sun but the heating and cooling costs. This is a really cheap fix and won't peel like films.
We have had customers who have done this to one...
I have done a job like this to both hollow and solid core doors. Two inches will definitely take off the rail. You need to find wood the same width as the inside dimensions of the door. With 1-3/4 doors, Home Depot has poplar already the correct width and other woods as well. You then use a...
The rollers could be bad and that is hard to tell until you have tried everything and then finally pull the door out to check them.
Your track could be worn. You can replace this or cover it with a stainless steel track cover.
If it is an adjustment problem, your door should have a tendency to...