Awesome pick up mate. I had one of there tents for 10 years (Bought second hand) and sold it for more than I paid for it, they are a great bit of gear.
The centre pole is spring loaded and also height adjustable. The spring in the centre keeps the tension and allow a bit of movement and flex.
If I was you I would just buy a side pole conversion kit for $80. It comes with an A frame for the roof and two side poles. Its easy to set up and removes the pole from the centre of the tent, giving you better sleeping options.
Regards
Jas