Ok, I'll buy one directly. The ESC was also pritty hot with 3S today...
What about the CC BEC? This one:
http://www.amainhobbies.com/product_...ducts_id/18210
Oh, and my Quark ESC already got that external BEC thingy, look at pic:

Which name do those things have/where can I get the other piece that should be on the external BEC?
Thanks,
Patrick