Please someone help me open the side part with the thumb-stick without breaking it, I cant find the trick. I need to mod an analogue Joystick in there.
I think that's going to be hard without breaking something. First you'll need to disassemble the main part of the orbweaver so that you can disconnect the cable for the thumb pad, working with the cable attached would be a pain.
CPTBadAss' thread has good explanations and pictures for the main partFor the thumb bit you'll have to unscrew every visible screw, then pry off the rubber pad underneat to reveal more screws.
The bottom part is snap-fit, so after you've gotten all the screws out you'll want to carefully pry it off with a small-ish flathead screwdriver or something.
That's about as far as I got in my disassembly, if you want to open it more then I would suggest that you just carefully try to pry it open here and there, and make sure to keep an eye out for screws.
But as I said, I think that's going to be difficult without something breaking.