Banggood chuck update....I contacted banggood, explained the excessive runout problem with the chuck, and uploaded pictures of the runout indicated on the DTI. It's impossible to upload a video to banggood, so I couldn't send the 30 second video I'd recorded. Then, no response for 4 days till this morning when I get an email that they will close the 'Ticket' since they haven't heard from me in3 days! So I go to banggood and they want: photos of the original parcel wrapper (which is gone) and a Youtube video! So, an hour plus of faffing around and I have the video uploaded to YouTube and sent banggood the link.
This matches with what I've read online about banggood - lots of promises but when it comes to a real problem they set enough obstacles in the way so that the buyer just gives up. I didn't believe the 'Buyer Protection' BS anyway...