Kangaroo PC - Improved?

I first wanted to replace the stock heat sink with a new better, but as I could not find a good fitting one that was making contact with the CPU, but not shorting anything, I decided to just add a heat sink on top of the stock one. 

Made a hole in the chassis so the fins could stick up and applied some thermal paste.  New look:

I know the hole is ugly but I do not have nice tools to cut with. Now the same video as in previous post gives (after warming up)

Slightly better. Did not see the braswell  chip throttle. I might try to put a small fan driven by usb to see what it does.