[dray]

I've watched the video for cordless chuck removal. Unfortunately, there are two conditions (affecting my drill) which aren't covered. First the torx screw holding the chuck on will not turn. I've broken two tips trying. Second, presuming I get the screw out, the allen wrench idea won't work because the chuck is jammed (the reason I need to replace it in the first place). I suppose I could replace the shaft itself but I'm not sure it's necessary. Any ideas out there?