Hot Shot 2 (R417C) is intended to replace ICOR's original R12 interim service replacement refrigerant, HCFC R414b, aka...Hot Shot, which is being phased out.
The information in the links you posted is incorrect regarding Hot Shot 2 and the existing refrigerants it replaces.
http://www.icorinternational.com/hotshot2.html
I don't recall ICOR ever mentioning anything about cap tube adjustments during a retrofit, but then DuPont never mentioned it either for their SUVA refrigerants until fairly recently.