Center vents 1984 300SD

[mrNewGuy]

Hey all,
So...it turns out my A/C DOES work, which is awesome. However, I believe I need a new fan clutch (semi-expected) and the center vents do not seem to be blowing out any air. The defroster seems to be blowing out on any setting however.
I have tried looking through the posts but can't seem to find anything specific to this. Are there any quick troubleshooting I can do or any links someone can point me to? Is this going to require removing the dash also or just the center console? From what I've seen, the center vents are problematic.
As you can tell I'm a noobie, but I'm learning....I have a manual on CD but it's lacking in several areas and the best advice is usually been there done that kind.

thanks in advance.