I just opened a new tube of Freesole, and even after being tightly wrapped with the cap glued on it dried up at that end. To get the liquid remainder out for another repair yesterday, I poked a hole in the tube at the crimp end. Then rewrapped and froze the tube.
This morning, once it thawed, Freesole came out of the pinhole without prompting, making it easy to do another repair. No clogging an drying up. From now on I'm not going to open the cap at all with a fresh tube, just poke a hole.