Bout to Break My Back Trying to Wall Mount Victron Quattro 15K, But Will Plywood Hold It?

[AlaskanNoob]

It looks to me like the hex heads are keeping the unit from going back further. May need to use a pan, wafer, or bugle head screw instead.

You mean the screws holding the bracket to the wall? They're the same on both sides of the bracket, one side is in fine. Possibly I didn't one of them flush enough on the bracket, I'll check that.