Re: What did I screw up this time?
hahaha... NEVER EVER EVER REUSE thermal paste. never. You could permanently demage the cpu. Wipe off the old stuff with 99% isopropyl alcohol and apply a fresh new layer with a drop of thermal paste the size of a tear drop and spread it over the cpu.
Macbook Pro and Logitech z5500s. All you really need.