Thanks for the reply.
I have gotten away from adjustable airflow drippers - it seems the only reason that I adjust them is to get them back to where they were set to begin with. The only adjustable I still use is my Strata.
Do the posts have a stop for the screws to clamp the wires against, or are they hollow all the way down?
PS
I used to live in Melbourne Beach, on Ocean Ave, right across form the park, towards the river from the library/police station