I no longer have the .22 sold it a couple years ago, out of state, per the new law...
A quick search (Bing) shows a downloadable version of the owner's manual, and there is also at least one U Tube video.
I would get and study the manual before attempting to disassemble the magazine. Disassembly isn't that hard, but RE-assembly gets tricksy.
The top of the magazine, where the windows are is a thin strip of metal holding the halves of the magazine body together. IF you slide it off, the mag will open up, BUT be careful, if you bend or twist that thin metal clamp, it might not go back together.
I do not know if Calico is still in business, but you might try contacting them. I never had any problem with wax in my .22, and never actually disassembled the magazine. Got started once, just to see how it looked and decided it was not a good idea before I got the clamp strip all the way off. Slid it back into place before I screwed anything up.
Good Luck, and possibly consider using a different brand of ammo that isn't so waxy. Sorry I can't be of more help.