OK i was fiddling arond with pens untill i notice 1 pen that worked. It worked PERFECTLY, 1st try for me for each one.Or the way i found out wich marker is sutable just do the little trick i do. Poor some rUBBING ACAHOLE INOT A CUP. then drop a pen into it, if it floats perfectly, its suitable. If is halfway through, no good. Make sure the density is less the 0.8g/cm3. To find out the desity u do.. Mass/Volume. volume is the space it takes and mass, you allready know what that is.
Just another suggestion I wanted to add. Once you get the screws out take them to a local hardware store and replace them with phillipes head screws. That is what I did and works great. I did this incase I needed to do another POT adjustment or for some reason needed to open up the Cube again. Alot easier to get into after replacing the screws with phillipes head screws.
i never got that pen trick working so i just bought a game bit on ebay for $10AUD but the company sent me 2 of them so i got a spare one laying around. and yea replacing the gc screws with philips head is a good idea. im gunna put the game cube screws on my brothers remote controll car so he cant open it any more to change the batteries...
Congratulations! u found what type of penis needed But about screws, it's easy too to use dremel or similar to make cutting on those, and it's easy then to screw with chisel screwdriver. I did that, but well, i maybe had fitting screws in mixed screw box, but i was lazy to search ^^