An apparatus for the heating of pressed stock in the manufacture of boards of material or in the manufacture of veneer panels. A primary hydraulic system provides hydraulic power for normal operation of the plurality of wheel brakes, and a secondary hydraulic system provides hydraulic power for alternate operation of the plurality of wheel brakes. The apparatus performs initial load balancing, idle load balancing, periodic load balancing and starvation load balancing to ensure that the workloads for the processors of the system are optimally balanced. The wax may also be added during the blowing process.