When you look at the video I posted on youtube, make sure you have Captions turned on so you can see the description of what I did.
This must be looked at while listening to the Immigrant Song by Led Zeppelin to get the full effect.
Here's the link:

 

Pretty much how I do it, except after clip install I walk the clip around till the opening is it 12 O clock. Why? because.....LOL
No real evidence these clips can come out if the opening is at 3 or 9 as has been builder lore for as long as I can remember, but its easy enough to do, so I just always have,,

 

I don't remember, but I musta done did mine right because I installed them way back in '06 and she's still running strong.