While this may be too late for the OP, perhaps it will help someone else in the future.
I recently had the same issue on a CE5000-40. When not energized, the head retracts and rests against a small synthetic pad by virtue of spring tension. The synthetic pad on my cutter had developed a tac causing the head to initially hang in projects. This machine was recently purchased used and I thought the prior user may have exposed this pad to either solvent or lubricant causing this; now I'm not so sure. In any case my solution was to replace the small factory installed cable tie securing the solenoid wires under the head cover with a nylon tie looped slightly lower over the synthetic pad, creating a new surface for the head to rest against. Thus far it's good to go.