I have done a fair amount of soldering, that's not what worries me, I'm not crazy about getting inside this thing and voiding the warranty. I did tear apart a very old Gravis game pad that has been around for years and salvaged some nice small buttons, then I dissected an old Cyborg joystick and got a couple switches, mounted on a small circuit board. These switches have four feet soldered to the board, This is where my knowledge of wiring is weak. Where would I solder the two wires for the switch to the trackball? I was thinking any two of the legs, but not sure, I would like to solder the wires the the switch, then to a new 1/8 in. plug so I could just plug it in, rather than opening up the trackball. This is one option I have thought about, or If anyone could paste a link to parts I could use, ie.. wire size, the correct type of switch and so on, I would really appreciate it. Sorry to be so long winded, I have been working Google to death but still can't find anything I think I could use, in part I think to not knowing what would really work. I'm not giving up on this I know I can do it, just needing some guidance. Thanks for any help. Max