Re bearing a CPC800 Gear system

[proflight2000]

Hi all

With the summer bouncing in I was looking at the possibility of replacing the nylon drive bearings in my CPC800 scope. Although she is plodding along ok, I can hear that things could be sweeter. I have read around the net peoples posts on how they have done this, but I was wondering if anyone here has? I know the main body contains bearings, but is this the same for the fork arm section, and most of all, does anyone know where you actually buy metal bearings of the same size etc? Thank you for any help.