I can do it all pretty much, except complex plumbing, electrical work - leave it to the pros.

There really isn't anything for you to do except to try to find an end buyer quickly.

All of the above except the extra commission?

This probably won't help except as an interesting story.  

If I start to make exceptions I lose control.  

Except for going full time.

The exceptions being that on anything over a single family, you may have the added expenses of providing water, electric and or gas.

I have a potential tenant--excellent all around except she has a judgment on the background screening.

The other owner has not begun pursuing anything except calling me. 

For many it does not work (my partner and me might end up as part of that bucket someday, that is yet to be determined), but there are always exceptions to every "rule" (or popular opinion).