Bagged Suspension Problem HELP!!

hey guys whats up i was wondering of you could help me i bagged my 01 gmc sierra about 5 or 6 months ago and i have noticed when i air it up the passenger side lifts faster that the driver side..is that normal?? and another think..i can have my truck layed all the way out and it lays harder on the driver side than it does on the passenger side.. PLEASE HELP!!