Sliding patio door for costal property - aluminum vs ...

Hi all, I'm installing a lift in my garage and need the overhead door to open as close as possible to the ceiling. The ceiling is 10.5' high and the door is a standard 7' tall door. Looks to me like I'd simply need to extend the vertical tracks another 30-32" and move the horzontal rails up. Sounds simple enough on paper, but my first problem is finding anyone that sells just the rails, or rails in an increment other than for the standard 7' door. But in theory this is all I have to do, correct? I know I'll have to switch to a torsion bar rather than the overhead springs, which is no problem. My question there is about the work the springs are doing. In the 'normal' arrangement the springs have less and less work to do as the door goes up into the horizontal part of the track (that is, they have less weight to lift as the door goes up). In the new arrangement, there would be 30-32" less door on the horizontal portion of the rails and more needing suspended by the springs. I guess this is handled by tighting up the torsion bar spring? I plan to put an opener on it anyway but I'm wondering how to balance the opened load with the tenion needed to lift the door (i.e., I don't want the door to fly open by itself but I also want it to stay up once opened). TIA, Jim

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Can anyone offer any wisdom on sliding glass patio doors?  I did a search on the topic in here and they don&#;t seem to be extremely popular, but we&#;re still leaning that way.  We currently have two 6&#; swinging patio doors (one side swings in, the other side is fixed) that the wind just howls through.  There is a huge space between the door and the jamb (you can see daylight on one door) and I can&#;t figure out how these things can ever be made tight.  My mother-in-law recently replaced her old wooden french patio doors with sliders and she loves them.

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There are two different doors available off the shelf here.  One is an Andersen Narrowline 200 series, the other a Pella Proline 450.  Both appear to be of about equal quality, sight difference in the type of seals used.  The major difference is that on the Adersen the slider is on the inside, on the Pella it&#;s outside.

If anyone has any experience with these I&#;d appreciate your opinion.

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