Good work. Nice that you cleaned that up. I sent the URL to my wife and she
asked me "How old is that dryer"?
I got rid of the plastic pipe this summer and went with the aluminum flex, and ours had a lot of lint too.
A few years ago the squirrel cage in the blower went bad and started making a racket and not turning enough RPMs.
Part 2783 from RepairClinic.com
While I had it apart for repair, I cleaned up a lot of the lint that had leaked into the motor area over the years.. What a mess..
I can't understand how these things can last 20 years, but some do..