Anybody know if there were different versions of the P2? There are some with just "Predator 2" written on the metal butt cap and others with a serial number and Predator 2 on the butt cap. Plus there are some with the pin in wood and others with the pin in phenolic. I found another thread on here about the topic but it just raised more questions than answers. I'm guessing pred just changed the cue slightly from year to year?