the friction pins go back in against the arrow.
ensure the small end goes in first with the fatter part going in last.
I don't know that there is anything that can be done to increase the friction once they loosen up.
your best bet is to visit a jeweler for new friction pins.
there should be a very small difference in the diameter.
I would try new frictions pins on my new watch, before I would try loctite......
Glad I could help.
Please accept my answer.