On a 1911 the fit of the barrel and link has a major impact on the elevation as it directly affects the angle of the barrel in relation to the angle of the slide.
For example, if the barrel link in a 1911 is too short and leaves excessive gap in the locking lugs, it's not only potentially unsafe, but will also result in a very high point of impact. The fit of the barrel bushing has a similar effect. If it is forcing the barrel up relative to the slide, then that will affect the angle of departure accordingly and raise the point of impact.
As suggested above, I'd advise restoring the pistol to it's original factory configuration and see how it shoots. If it shoots normally than it will identify the after market user re-engineering as the issue. If not, then you can send it back to them to troubleshoot and repair. If you send it back in a bubba'd configuration, they'll politely decline and just send it back to you.
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