I have installed 3/4" flooring downstairs in my home, replacing the 3/8" that was there. An unintended consequence of this has been the front door sweep is now catching on rugs, so I haven't been able to have a rug down at the front door. After 1 winter of this, I have decided this has to be fixed. I was thinking I could remove the old threshold, put down a weather treated shim of some sort that is >3/8" in height, put down a new threshold, and then cut my door to fit with the track saw and appropriate blade. However, I wanted to see if anyone had a suggestion or sees a potential mistake in my logic here, as I don't want to discover a problem halfway through and find myself with no front door. Thanks!