Mark, here is the secret to learning a new keyboard. If you have a problem learning a new arranger keyboard, it's because you DIDN'T learn your PREVIOUS one thoroughly. It's all about understanding the CONCEPT behind all the functions (which happens to be essentially the same for all the major arranger keyboards). The guys like Don and Gary and Fran and Bachus, and others who know their instruments well, also knew their PREVIOUS instruments well, and the ones before that. But you have to start somewhere. Take that PA3x and get to know it better than Korg does

, and I guarantee that learning the next arranger will be a piece of cake.
Full disclosure: I have never PERSONALLY followed this advice

.
chas