Vermeer 605J

I have a 605J baler the belts will not tighten.    The belts all have been cut to 43'6" but should be 44".  

I put air in the bags up to 100lbs(gauge is off but 15 bs).

It moves the rods but not much.  I remove the arm end with the springs. They were froze.  Any suggestion on how to fix the matter.  Would be great.  thank u

Vermeer 605J