I tested the idea of using PGS as heatpipe and here is what I found:
1- SSM is impressive at dissipating heat, better than a heatsink with Kryonaut, 20C drop
2- it could be that there was too much distance between the heatsink and the source and Kryonaut isn't magic
3- making a heatpipe by binding two strands of PGS with Kryonaut then interfacing to the SSM with cryonaut doesn't increase dissipation
4- binding a large sheet of PGS to the heatpipe (with Kryonaut) drops 4C
5- if the contact between the SSM and the heatpipe isn't wide, there is no dissipation at all