The ring that secures the PVC to my waterfalls pump busted over the winter. Some of you may remember my panicked post upon waking in the morning to find my pool completely empty. Being the falls pump I simply excluded it from the system and emptied it. Now it's time to fix it properly. I've included two pictures. One is a close up of the break. I have what I think is the correct replacement ring/thread but I need to figure out where I should be cutting the PVC to remove the old ring and put on the new one. In the second picture does cutting and splicing in new PVC make more sense in one of these locations over another? Should I be addressing this from a different perspective? Thanks in advance!!