On Sat, 18 Apr 2015 21:24:35 -0700 (PDT), bob haller
wrote:

at the connection between the metal pipe and first plastic fitting. tried everything it always leaks a little. its in the shower so i never cared.

If there is a rubber / nylon washer in the plastic piece, that is
badly compressed, or worn replace it with a new one.

YMMV