I used to have one of those guides, and it did the same thing. I think finer thread pitch might help. However, when I attended Gunsite they said they had done a lot of testing of recoil spring guides in full-size 1911's and concluded they were a solution looking for a problem. No increase in reliability, cycling speed or accuracy could be demonstrated if the rest of the gun was set up right. The extended guide's main value was to bull's eye shooters in providing a little bit of extra muzzle weight that some prefer. For speed of presentation, extra weight isn't a help. So I would take the long guide out and borrow a conventional 1911 recoil spring guide and recoil spring plug to try out. This will address two issues: Not only will it end the nuisance of the self-disassembly, but you will get a chance to watch to see whether the lock-up problem is independent of it? It may or may not be. It is concievable, though unlikely, that the threaded joint gets loose enough to cock upward and its joint edge catches a little on the expanding spring coils.
More likely is the bushing and link lock-up are tight enough to need to wear in before a standard strength recoil spring will always close them. This is easy to test. With the gun on "EMPTY", pull the slide back and let it gradually go forward until the barrel is just about to engage the locking lugs. In a new gun that is tight, the spring is often unable to close it without the inertia of forward motion. But holding the gun single-handed and snapping your wrist forward and down should provide enough inertia to finish closing it.
If it closes without help or closes very easily with the wrist snap, you may have a magazine that hangs on to rounds a little too hard. See if the problem only occurs when a particular magazine is in the gun?
If it doesn't close, or the wrist snap has to be really hard or repeated several times to work, then you need to look for a mis-timed barrel or an over-tight bushing or over-tight link lug fit over the slide stop pin. If the gun is so new, I would just send it to SA for correction. What you don't want to find is that you are having locking lug interference that is causing peening or some other potentially damaging wear.
Nick