Hey Dino,
This is Jonathan Wang. I just want to let you know that the new STS 3-port engine with the black heatsink (no mark on the heatsink, modified by Old3) is so damn good! It brought me a 2nd place in Amateur class of Airtronics race last Sunday. Jeff Lin was there, too. And we had a good race last weekends.
I bought this engine from Geoff and he personally took care of it. I just want to say thanks to STS for making such a good and affordable engine, and to ProjectZen.net for importing it into States and providing great customer services.