Yes, when you increase the draw length on the short string you will need to readjust the gizmo because of the increased limb bend. When you go from the long string to the short string the bow will bend differently so readjust, again you will need a new gizmo adjustments as you increase the draw length.
Glad you pointed this out, I should have mentioned this in my video but it is a done deal, my 13 year old producer, director and videographer won't be back for a year.
The main thing is to use one gizmo adjustment for both limbs.