HELP problem with my flatline tank?

[gadget68]

I was just shooting my new Xvalve when I noticed a sound inside my 68/3000 Flatline tank. It sounds like a Ball bearing rolling around. How do I get inside the tank? What tools are used? My Local Paintball shop (AKSCUBAINST) will help me do this but any advise from anyone would be great. Oh yeah I want to try and do this with as little to no scratches to the reg.

[rikkter]

i'd take it to a scuba place, they are machined threaded or whatever. nonetheless, just to be safe and to make SURE its working right and back together right, i'd take it to a scuba.