Analogue-sequencer

Hello everyone. My P3 came in wednesday and I'm just sitting down with it. I'm running os 3.1, and hit a a a bit of a wall right off the bat. As I go into Pattern Edit mode, depending on the bank I'm in, the patterns just cycle through either 3 steps, or linger on the first. 
I can engage any of the other 16 steps, but the sequencer never moves onward to them. 

I'm sure this is something quite simple, but I can't seem to figure this out. 

Any help would greatly be appreciated.

Thanks!
Joel