If he's got all the buttons, it shouldn't be too incredibly hard. My mare is a reiner, she has every button imagineable, but I expected poles to come awfully hard for her. I normally spend a lot of time with a green horse pushing them over between the poles, exagerating the "move over", because once you get running it will tighten up. It's kind of ahrd for me to explain everything over the internet, but have you done much gaming or speed events before? The dynamics are the same...Approach, rate, turn, etc. It's just adding the weave.
Pssh.I didn't pick up the wrong lead
It's called a counter canter...
...A very advanced maneuver.