[jkck]

My drier only dries slightly on medium setting and has to be reset sometimes several times before clothes are dry. All ducts are clear and omms all check out good.

[denman]

Here are your parts
Replacement parts for MAYTAG MUE2000AYW STACKED DRYER-ELECTRIC | AppliancePartsPros.com

Here is a service manual
http://appliancedigest.com/index.php...service-manual
You have to join the site to download the manual but it is free and this is a very good site for manuals and other info for the appliance repair DIYer.

How does it dry on high heat?
Does it have heat on the medium setting?

The vent is clean but is the blower wheel and the outside louvers.
Unplug the unit and disconnect it from the vent system.
Now try a run.
If it now dries OK odds are the vent system needs checking/cleaning.
Be sure to check that the louvers on the outside of the house open correctly.

If you do not want any lint in the house.
Take a pair of pantyhose.
Put one leg into the other and then attach this to the dryer's vent.
Leave enough room so the pantyhose can balloon out like a windsock.

Both the above will let you check the temperature and the air flow.

Note: The above is not recommended for gas dryers due to carbon monoxide concerns.