[Al Skierkiewicz]

LH,
The appropriate rule should be...
R01> Energy used by FRC ROBOTS, (i.e., stored at the start of a MATCH), shall come only from the following sources:
A. Electrical energy derived from the onboard 12V battery (see Rule <R40> for specifications and further details).
B. Compressed air stored in the pneumatic system, stored at a maximum pressure of 120 PSI in no more than four Clippard Instruments tanks. Extraneous lengths of pneumatic tubing shall not be used to increase the storage capacity of the air storage system.
C. A change in the altitude of the ROBOT center of gravity.
D. Storage achieved by deformation of ROBOT parts.

Note that the stored energy is specified for the start of the match, not through the movement of a cylinder after the match starts. So if I understand your question, the response would still be no. Additionally, the regulator is designed to keep the working pressure at 60PSI and I believe it vents excess pressure from the working side to maintain that pressure. Don't forget you can have up to 4 storage tanks at 120 PSI ahead of the regulator.