I've seen people pick this exact lock with very little effort, and I can't understand why it's giving me so much trouble. So, I come to you guys for help. I know all the theory, but when it comes to actually doing it I'm not having the best time. When I started out with pin tumblers I had major problems and it all came down to tension in the end; I assume this is going to be the same story. How on earth do I find the correct tension for this sucker? I tried applying extra heavy tension to find which lever was binding the most, but they all seem to move fairly freely. Thing is driving me nuts. From the videos I've seen, when the lock is successfully picked it's obvious that very heavy tension was being used. Why on earth am I having such a hard time with this?
Here are some pretty pictures for your trouble.

The padlock in question, with keys:

And the picks:

Hopefully someone can give me a bit of hands-on insight when it comes to these tools. Seriously, nomatter how much tension I apply it's just not doing anything. I'm definately using the correct size tensioner for the lock, and it's definately on the bolt. I'm all out of ideas but I'm determined to get the hang of it, so I'll be playing around with them in the meantime. I also got some dimple picks so if I'm not getting anywhere after a while I'll have a play around with those.

Cheers everyone!