sigh...

I may have spoke too soon last post.  My computer still works I guess, but it won't always boot on the first try.  While booting, I still sometimes have to push down on the GPU to get it to work.  In the next couple of days if I have time, I'll take it apart again (I'm probably a pro by now anyway), and I'll put something between the heat sink and GPU to put more pressure down on it.  (probably some pennies with thermal paste on them).  It does not take much pressure to get the computer to boot, so that should probably do it.  If not, I'll just keep pushing down on the GPU when I boot up, that seems to work, but it's in no way a fix. 

If anyone has any suggestions of how I can put more pressure down on the GPU when there's no room for anything in the small case, be my guest.