D
dennis young
The manual says to use 3/16 flax, but it seemed a slightly loose fit even when tightened up (It also went in much easier than I expected). I therefore removed two rounds and replaced them with 1/4 -- which was a struggle to get in but which is firm as a rock. Could it be too tight? Should I go back to the 3/16? ALSO: any sense in using TEFLON TAPE when re-engaging the threads (I am thinking that would ensure that water goes all through the box rather than dripping at the lock-nut).