Great thanks for explanation especially the idea of why side step emphasized swing action , not be treated as a driving step.
I am practicing to acomplish turning lock to right following natural spin at one go .My teacher said : dance this 2 figures continuously with your strong ankles ,( He forgot I am 60 not 35 .) less flexed knee on 1, & , left toe slides forward as far as possible on beat 2, I felt a little bit panic for its farer distance based on limited flexed knees.( I will be appreciated if I may flex more knee, lower center , more propulsion generated, although the price is shorter line.

) Any way, I should overcome it if I want to dance better.
Ylchen