Ordering was easy and my package arrived on the date I expected. I completed the assembly in under 30 mins and I am happy to report that the Smart-Ring works well! My Hayward Pool Pro XL has made 3 passes over the main drain and kept on going! While the assembly of the Smart-Ring is fairly easy, there are some things that should be noted: (1) the box doesn't mention that the six small screws are for the first part of the outer ring assembly (2) the box also doesn't mention that in attaching the outer ring to the plastic ramp it is important to find the squarish area to make sure it covers the tiny screws--once you do that the fit is exact and all the screw holes should line up perfectly.

Heather B, Sep 19th, 2011