i live in maine and it gets pretty cold here. i just bought a bagged f150 and am having problems with the bags having a mind of their own. when i drop the truck on the frame, the bags fill themselves at the same time as the compressor. i know that its supposed to stay dropped while the compressor fills up and wait to be switched up, and i was just wondering if this might be a problem with a valve or just a factor of the cold. its my first bagged truck. please help!

Sounds to me like your valves are staying in the open position. How many valves you running and how they plumbed makes a difference. Check basics first including water content in the tank and lines