I took the middle section off so I could put it in my sump (the only way it fits) and cant get the nylon screw in it. I get 3 or 4 and cant fit the others in it. Is there a trick to this??
Sit the collection cup on and then thread the screws in or if you have a newer model with key holes then thread the screws in then sit the cup on the bottom flange and twist. Should be easy. It is easier to put the screws in and not tighten them down until all screws are started. If you tighten one down and then try another, you might have problems, but still should be fine. I always tighten my screws in a star pattern.