If these are the Speedplay Light Action pedals, the tension isn't adjustable. That may be good or bad news for you, depending. Here's their FAQ page:
http://www.speedplay.com/index.cfm?f...ightactionfaqs
I have the Speedplay X5s, which have the same shape. Both models are designed with a set amount of float, and I like them because I find them really easy to get out of.
I'm a real weenie with clipless pedals, so I clip out with my right foot while coasting to a stop, and then start the whole process of getting off the bike. So I can't help much with the technique here.