You asked in an earlier post if anyone was familar with the WW collets sold by Sincere. After watching a Youtube video by Mark Lovick it appears that he has a set of these. You can see them on his Youtube video but since he appears to live in England you may be able to drive over to his shop and see him in person. He seems to be fairly nice and answers the Youtube comments. Who knows, maybe you could talk him into joining the forum.