This pic shows the hunk of sheetrock removed from the right side of the hole to allow for moving the cabinet over.
As it turns out, the wife measured the mirror edge, instead of the cabinet edge; thus making the hole to wide to the left.
Counting to ten now….
I cut a 1″ strip off of the sheetrock (quite a feat with a utility knife), and placed it on the right side, and put in the cabinet.
“No” said the wife, it’s still too far left.
Here’s what I did
I cut a couple of 1×1 to fit. Glued them to header, and used the piece cut from the sheetrock on the left.
Crude? indeed. The cabinet fits.
Hopefully, sanding will work and the painting will cover the rest of the anomalies.
Looks like I have the “not a drywall person” gene…I’m OK with that.
After sanding, I cleaned off dust with wet towel, and applied another layer of plaster…I hope that’s enough. We’ll see.