Hey guys, I made a (not so) quick video for one of the guys here on RCM with a quick explanation of series and parallel and a how-to on soldering the Castle 6.5mm bullets.
If anyone wants to add some techniques or pointers, I figured we could use as thread for these specific topics.
http://www.youtube.com/watch?v=O9WL05jYa2A
http://www.youtube.com/watch?v=RnVWNfazfds
Two parts, about 20min total...