my psg-1 does not "whrrrr" anymore either. I had the 300% systema full tune up kit in it for 5 years with a system super torque up motor. That motor the spring would decompress just fine, then the motor went out. The only thing I changed was the motor to the new magnum torque motor and no decompressing. I just take the motor out when it is time to store it for a long time, and I leave it compressed threw the season. springs are easy to find and easy to change. Hope this helps.
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