[StickMon]

Two separate issues.
The O-ring sticking is just an annoyance.
The plastic tip gets stressed going around the bends in the tube.
It will eventually break off, especially as the plastic degrades from heat and age.
Mine seems to come out and go in easier with a half turn during the process.
Hopefully that puts less stress on the tip, but it will eventually break off.

You can see the crack in polar's last picture. Need to keep an eye out for that early sign.
If ECS ever gets their stick the right length, keep in mind that their tip is crimped to the cable.
Hopefully they do a good job of that. Word around is that the magnet in their oil drain plug falls out.