Finally went the distance myself as well
The second time I did it, it only took 15 min (first time, for some stupid reason, I put the 1.6/533 back in
So on reboot (with the wire in place) it wasn't happy at first
Replaced it and put the 1.7 in - only 15 min the second time. It's really not difficult.
I used AS5 on the CPU, but didn't do anything with the GPU - it's still under warranty. If I ever need to do repairs on it, either I'll convince them to let me, or I'll buy some thermal tape (might not be the exact same, but it will be close enough). Since I don't OC the video, I really don't need to do it.
So far it's rock solid at 2.26Ghz!! Awesome. Battery length has decreased a bit, but I'm testing that now to see how close it is. I may try undervolting it - make up the difference
If I can get anywhere near 3hrs, I'll be happy.
And - recently the prices on ebay have dropped drastically. Got the 1.7 shipped for $119 - used to be tough to find it less than $150+