I'm trying to connect anti tip straps to my 65838 rear projection tv. I can't tell which holes I can use to screw into. There looks like there are two different possibilities. Both are small circular indents, but one has a glossy cover that looks like it might be meant to break through and the other is the same material as the rest of the back. I could figure it out if I could see a manual figure too (doesn't seem to be online). I just don't want to screw into any electronics.