My stacker has had a jammed CD a couple of times. BA MK2. Both times involved constantly pressing the eject button, inserting cds, ejecting them again, over and over. The first time it came good after about 15-20 minutes, however the 2nd time took a couple of weeks of fully loading the stacker, ejecting the cds again over and over again at every red light I'd stop at or letting it cool down after driving. I was at the point of considering getting it repaired. My suggestion would be just keep at it for a while, if it comes good you've saved yourself a lot of hassle removing the entire unit.