I use the
RedHead Universal Cleaning kit from Bass Pro
Add some heat shrink over the connections and you're golden. I do recommend putting a length of heat shrink over the last section though to help prevent the brass rod from contacting the inner barrel. Basically adding guides that centers the rod inside the barrel. You can even set it up so the heat shrink is mostly over one section and just overlaps enough of the next one which would allow you to easily unscrew it and put it back together.