M17x R4 thermal pads size of PCH, GPUs 970m/HD7970M, CPUs mosfets

Good evening or morning, Dear community!!! Sorry for my bad english, I'm not from US countries.

I'm owner of AW M17x R4, and I have such questions and observations below. I think the topic below will be interesting for the most of laptop users.
Arctic thermal pads are the best what I could find, so don't suggest me Fujipoly, because it's very complicated to find them. So:

1. During the change of thermalpad of PCH ( thanks to this post http://forum.notebookreview.com/threads/m17x-r4-pch-temps.678988/), image below:

Spoiler: PCH heatsink

I used Arctic thermal pad 1мм, everything was good, but I mentioned that aluminium plate a little bit lifted, so I ordered Arctic thermal pad 0,5мм. Which size did you use?

2. I want to hear your opinions about thickness of thermalpads of such GPUs below. In such experiment I used AMD heatsink AT0MK0010F0 and Arctic thermal pads. I spent not one hour in searching of proper size, so:

Spoiler: GPU NVIDIA GTX970M

Spoiler: GPU AMD HD7970M

3. Near the CPU there are two lines of mosfets grey and black (I don't really know how to call them). If you don't use any thermal pads, there will be some clearance. So i used on grey mosfets Arctic thermal pad 1мм and on black -- Arctic thermal pad 1,5мм. Is this good solution from your side? How i can understand those mosfets are feed lines of CPU and they become hot during working.