I have an older Admiral (actually, it's two now) that I have replaced the sac, gasket and ring on, but I am getting no vacuum. Everything seems to right, but I have noticed one little detail. The very first snorkel I repaired was an early one, where all the metal ribs were the same width, as was the feeder and nib assembly. They lined up and fit perfectly. I've noticed on the two pens I have that the grooves in the feed seem to be the newer models (maybe I have the ages reversed) where there is a single groove/rib that is larger than the other three. The sac protectors on both pens are all the same size. That leads me to think that I'm not getting vacuum because I actually have mismatched parts. I did a water test, and found a little water inside the barrel of one.
Thoughts? Should I be on the look-out for the correct sac protector?