put tennis balls in 3 separate white socks (to prevent dye transfer) and throw them in with the sheets.

the lint catcher: if you have large hands like myself, it's easy to open. i doubt there's anything wrong with yours--it's just the design.

clothes WILL come out DRY, on the Delicate cycle, if you choose normal drying.

If you have a gas dryer, the temperature will modulate between 161 degrees (give or take a few degrees), and about 100 degrees, on the delicate cycle. that's one feature of the gas dryer that I don't like. ie, the max outlet temp is always aroundf 161 degrees, regardless of the drying temp that you select. the only difference between each temp setting is how long the temperature remains near 161...

"When I use the delicate cycle the clothes are spun fairly dry from the washer."
Does your Delicate cycle not give you spin speed options?
IMO the Duet was not spinning them enough, because 'really wet' should not be happening. Just my opinion, though.