I am trying to get an accurate understanding of goals so I can optimize my practice time..Yoda talks about the sweet spot plane as preferable according to Homer--the sweet spot is a "spot" rather than a line-therefore it can be on the turned shoulder plane while the shaft has infinite options of its plane..Is the correcd-TGM- definition of the sweet spot plane a line parallel to the shaft going through the sweet spot??I hope so--tell me its true---