I'll see how far I can go in taking it apart w/o getting under the
sink.

Thanks.

Ed

Could be. One thing to look for, internally, is a buildup of
minerals, even
if you theoretically have soft water. A cheap and easy remedy is to
buy a
gallon of white vinegar, heat it up in a big pot (but not hot enough
to melt
plastic parts), soak the parts, and scrub with a toothbrush.