Both my baskets are so tight in the skimmer opening that I can barely get
them back in. The lid is the same way.

What would make a skimmer basket almost impossible to fit into the skimmer
hole? Even the cover hurts my fingers just to remove it.
http://www3.picturepush.com/photo/a/...g/12859786.jpg

Do these skimmer openings shrink over time (the pool is only 10 years old)?
http://www5.picturepush.com/photo/a/...g/12859788.jpg