i would respectfully say, your use of the word "correct" implies that the other is incorrect i think that is not the case:
Point taken. Perhaps I should have choosen " the version that was first taught out circa 93 when Master Sin introduced the form to the "Sunday Rank Advancement" class which at the time, contained 98% of all the upper level students. Granted, M. Grooms was not taking this class so that might account for the differences in some of the movements in the way he learned it.
I would also like to make it clear that I rarely make the "this it right, that is wrong " distinction. I have been around long enough to know that the forms are far from static when taught out and for those that get really hung up on that are missing the essence of the forms in the first place. I merely point out the differences from the perspective of learning them first hand, over many classes (as opposed to the seminar/cram sessions/videos) from Master Sin, the first time they were taught out.
"Pain heals, chicks dig scars..Glory lasts forever"......