okay guys. I am not A/C expert, but i just had my A/C charged up with some R12 refrigerent, no leaks in the system, charged right to 3.25 lbs as the system said. One thing I notice is that the compressor cycles when on defrost mode. If that normal? Also on normal or max, the compressor kicks out sometimes. not often, but like once every few mins. When giving it gas, it stays engadged. Is that normal operation for these cars? Any insight would realy help me understand the system better. Thanks.