I'm wondering if anyone has come across the issue that I am experiencing. I have a new aquarium that has 6 1.5 schedule 80 bulkheads within the overflow chamber. I was able to install them with out have any pvc piping connected to them without any issues. But due to the limited space in the installation area I wanted to glue the schedule 40 pvc pipe into them to make that part easier. After glueing the pipe I am no longer able to get the ring onto the bulkhead. It's simply gets stuck after a few turns. Seems to me like the glue caused a very slight expansion of the pipe. Wondering if I should just call it a loss and order new bulkdheads.