Not quite sure with your terminology here, but I'm assuming your 'minute wheel' is the cannon pinion, and the 'stop lever' is the lever between the plates on the rear end of the rack hook arbor?
In which case, if the cannon pinion should have its pipe squeezed only enough to allow the hands to be moved normally. It won't stay put properly until the minute hand is on and pinned.
Don't move the pin on the gathering pallet wheel - it should be straight! What happens if you try it without the rack?