#1 This is another fix for random switcher problems.
You can unscrew the base plate from the switcher with a pen tip.
Where this base plate connects to the actual micro-switch (in the middle) you might see some
left over glue (which I guess was to stop the micro-switch from moving about) covering some of
the metal contact. Simply scrape away the glue bits with a screw driver tip.
#2 You might find some 18350
batteries out there that are slightly shorter than the ones EM stocks. If you don't want to risk pulling the spring longer, then put in a small coin between the
spring and the bottom of the battery. (do not use the coin at the top of the battery!).