SLK-900U Installation Tips

I'm installing my SLK-900U on my barton 2500+...

It comes with 4 little feet and a small long 5mm thick adhesive strip...
Should I attach these little feet or leave them off- the web instructions don't say anything about em' but some people say to put the feet on the designated spots on the bottom of the HS....
What is that little adhesive strip for?

I installed the HS once without the feet, but I got lots of sliding which I think is probably because I didn't use the feet. Any other tips to get the install done right. I'm puttin the thinnest layer of AS3 I can that has full coverage- I just need to get it down right the first time.

I'll try and line up the screws just above the core before I set it down...

Let me know if there's anything else...

Well, the 4 feet are just padding if you're concerned about crushing the core. The strips are to reduce fan vibration. I haven't used them, but someone mentioned that you put them one step below where your fan is sitting.