I've owned this game twice (sold #2 yesterday), and I changed the CPO on my first. It was a PITA, but definitely a learning experience. I had to use a TON of Goo Gone, and also bought an attachment for my drill with little metal bristles to get the remaining 25+ year old glue off. Once that was done, it's just a matter of looking up the holes with the new CPO (I took toilet paper rolls, cut them longways, and put them through the holes. Helps to line everything up real nice). It turned out really sharp, but was a lot of work.

If you have any other questions, just ask! I'm no expert, but I've owned two and both were 100% complete.

Also, there are three different games that all use the same card dispenser:

Slugfest
Hotshot Basketball (basketball shooting game, not pinball)
Super High Impact (arcade game, not pinball)

If you need a dispenser, be sure to check in those games as well.