You didn't show how to take the chuck off. I recently bought a Chinese BS-0 replica from Vevor, and the chuck is on very tight and difficult to remove, so I would have liked to see some tips for removing it, as apparently other people had great difficulty with taking off the chuck as well.
I have not had any trouble taking the chuck off at all. Could you please clarify what the trouble is? Is the taper getting jammed or is it a problem with the cams? I have found that the cams sometimes need to be adjusted a small amount.
