One of the fins is very loose. In order to tighten, I need to get inside. How do I lift the top? Is there a snap?

Hi pete and welcome, here's a link that should help. Good luck

How to Remove the Top of Maytag Dryer | eHow.com (http://www.ehow.com/how_5548599_remove-top-maytag-dryer.html)

Had to remove front panel & door, then remove 2 clips that hold the top of dryer and lift the top.
The rotate drum to locate the loose vane & tighten screws.