14060m dive extension

[PowerCosmic41]

I am very close to buying a 14060m submariner but something bothering me is the lack of micro-adjustment and the fact that the diver extension can just open right up with a pull.

I saw recently that Steel Reef has put out some on-the-fly adjustable links for the 5 digit subs and that they “replace” the traditional divers extension. Anyone have experience with these? If I replace that last link that attaches to the diver extension would that stop the clasp from opening with just a tug?

Sorry if this is a stupid question.. just doing tons of research and trying to get all the info before I buy.