Help Repaste X280

I opened my X280 for a repaste today and noticed, that the heatsink does not have a continuous flat surface, but a cutout for the smaller part/die. Do I need to put paste on both of the "dies"? And if so, do I have to put more on the smaller one to bridge the distance created by the cutout? Would it also be possible to use PTM 7950 pads? The original from honeywell seems to only come in one thickness and again I'm not sure how to deal with the cutout in the heatsink.

Any help is mich appreciated!