I know one should remove the oring but I never do. They end up coming out on their own due to the corrosiveness of my Lava juice over time.

I would take them out if it weren't for the fact those lil' b@stards are a big pain to get back in for me with my arthritis. Yeah its a simple little task for most but I usually replace the whole tube which is easier and I have tried all the little tricks to get them back in. Im out of new tubes so my Tesla is in Maine for a tuneup and a replacement oring.