about 5yrs ago I overcharged my A/C and the relief valve popped on the compressor. it vented some freon but seemed to seat itself. so every year I have to put in about 1 can of freon over the summer. the a/c seems to work ok till yesterday. I was 1 block from home and I heard a screeching sound for a few seconds and my engine bobbled a bit. I could smell smoke so I flipped off the a/c switch and pulled into my driveway. I even saw some smoke from under the hood. Yikes. not good. I think the compressor seized and the screech was from the clutch slipping? does that sound like the right scenario? seized compressor and slipping clutch?