My truck has kind of a negative rake thing going on, especially when it has a full tank of fuel. The suspension is completely stock (base model). I would like the truck to sit level and am wondering about air shocks for the rear? Good idea? Bad idea? On the good side I can see being able to adjust the rear height so it sits level. On the bad side maybe always having to add or let air out might be annoying. What do you all think?