Revel Performa M106 Previously Screwed

I have 2 pairs of Revel Performa3 M106 speakers that have 4 small bore screw holes in the rear.     I am the original owner, they are 3 years old and have seen around 450 hours of use.  They were suspended from the ceiling by braces and used as surround height speakers.  4 short length screws fas...

I have 2 pairs of Revel Performa3 M106 speakers that have 4 small bore screw ...