The water supply line broke at the bottom of my autofill. I thought it would be an easy fix as there is a PVC slip fitting that is made with flats so a wrench or socket go on it.To my surprise I found out that the fitting which is threaded into bottom of autofill is glued in at factory. So it looks like I will need to bust concrete and flagstone to put in a new autofill. My question is why does Pentair glue in a threaded fitting? They even give you a spare one with a new autofill unit. Doesn't make sense and looks like whoever is doing the assembly was not trained properly.