Upon looking at the A102 'Pro' it seems the same manufacturing process used on the A102 was used to attach the fins to the copper base. A process that created a lot of widespread results from site to site, reviewer to reviewer. That process is the use of thermal epoxy to join the aluminum fins to the copper base. This is where things get tricky - too much and it interferes with moving the heat from the copper base to aluminum fins where it can be dissipated properly, too little and the fins won't adhere to the copper base, or air pockets can form, interfering with cooling even more. It's a manufacturing process that is more like a 'catch-22' since it leaves no middle ground. You either win or lose. I guess on the flip side - they're not screwing a copper base onto the bottom with a couple of metal screws. That's a process that doesn't work, at all, but yet still being used...sheesh.