If you end up needing any replacement parts, PM me, I can send you a new trackball assembly for cost of shipping.
Sorry for the thread necro, I ended up repairing my board, just had some solder and then stuck the broken wire in the melted ball. Everything works great.
hahah sadly I'm not even using the trackball since my new (well it is an older X58 rig) motherboard only has one PS2 port on the motherboard. so the trckball is just sitting!
Also I PMed you about your Unicomp! thats quite a coincidence! Thanks for your willingness to help, I dont frequent this forum all that often!