Yesterday I was wondering why the 12V regulator in my DS has run hot since I installed ether the LL1948 or the new nickel transformers. Asked my son if he had any ideas. Well it turns out that running a 1:2 transformer gives you more gain however at the cost of drawing more power (heat). Before I did this mod I could not keep my fingers on the heatsink. Now, with the heat spreader I can keep them on all day long.
If you are running a 1:2 transformer with a stock power supply (no external supply) you should do something similar.
Just gently spread the heatsinks slightly apart and slide the heatsink pad (for a M.2) it between the heatsinks. I held the heatsinks together with a U shaped metal spring wire I made up.
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