...I love this forum! I had never heard of using Loctite to solve a problem I guess many of us have (including me).
Now a few questions: I will go out and buy a bottle of Red Loctite, but would like a little advice on how to best apply it to the clip end of the pen. I found Loctite in GEL form, which is easy to apply with a toothpick right where you want it to go. Do you put it inside the tube or on the cap? Apply to inside tube surface, resulting in little visible "squeeze out. Should you use something to clean the area to be 'loctited'? I use a small cylindrical wire brush, found in plumbing at Home Depot (brush intended for use on copper pipe prior to soldering, is too large diameter, but can be shaped down to size on a standard grinding wheel). I also use a dental pick to create some scratches in the surface of the kit components that will be in contact with the tube. The components are plated and very smooth, so I introduce a ruff scratch pattern on the mating surface. Is one drop sufficient? I use a few very, very small 'dabs' on a given joint. Do you spin the cap to spread it around like you do when you are gluing the tubes? That is what the toothpick provides for. On snug joints it is not possible to spin 'em. What do you se to clean any that inadvertently gets where it shouldn't be? Just a cloth or paper towel...no solvent.
So many questions...