This link is an Index of all tubalcain (MrPete222) videos which appear on YOUTUBE. . It is listed at the HOBBY MACHINIST FORUM.
http://www.hobby-machinist.com/showthread.php/5185-Index-of-Tubal-Cain-%28MrPete222%29-videos
Tubalcain shows how to align the headstock center with the tailstock center. Part 1 of 2