So, I've gotten the Impala out of hibernation and noticed that the A/C is not as cold as it should be. The last time the A/C was serviced was easily 10 years ago when the compressor crapped out and before a few days ago, the A/C probably hadn't even been on in 3 to 5 years. The car has sat more than it's been driven for longer than I care to think about. So, should I give one of those recharge kits a shot or take it in for service? I'm thinking try the kit, since it's cheap and may take care of things. Worst case I'm out $20 or so. Am I missing anything?