I recall an earlier thread about issues with the ears but when they were back in stock (for a little while) I ordered them. Looks like the issues still remain.
The threaded holes which are used to relocate the X switch aren’t tapped correctly so the bolts will never tighten. There is some evidence of treading but mostly its a few shallow ridges in the aluminium. Really poor manufacturing job.
On the right ear in order to install it you have to back way off of the normal 5mm standoff position. Looks like you lose at least 10mm on the X axis due to clearance issues. Guessing this is not solvable