Hello From Sunny South Florida

Thanks for the warm welcome everyone.
Well, I've spent the entire morning fussing with the Zodiac G3. Up till now it had been working great, then the round flipper foot thing kept falling off so I replaced it and the foot pad as well but, now it's just not working as vigorously as it used to. I've checked all the tubes, one had a leak so I pulled that one off but, it's still not suctioning or moving around the way it was before. I've checked the diaphragm, no holes or tears. Any ideas on what I should do? Also, I don't know how old the G3 is...came with the house. Could it be the pool pump? Thanks in advance. ;-)
(btw: just started using Poolmaster Basic 5 Test Kit)