Instead of trying to structure a deal, spend more time and energy figuring out what's wrong with the property. 

In 10 years, when you have a nice portfolio of homes and they're cash flowing nice chunks of money, you'll appreciate the amount of time, energy and effort you put into your business and will get to enjoy the fruits of your labor.When I first went to the cpa I've been using for the last 5 or 6 years and explained what I was doing, he said, he's heard it before.

You can keep trying as it is possible to get different results depending on who you talk to, however I do not think it is worth the energy. 

Loving all the energy of your post and the group you’ve formed!!

I think you can't get this credit on an investment property but if it is your primary residence, can you apply the credit on the investment side of the duplex?Would that be something you can use 'twice' if that is the...

I assume the humidity is coming from heating water and it doesn’t matter if that heat is gas or electric stove.

There also should be very few (if any) piping or electrical penetrations through the fire wall, so I don't think your rodents are getting in that way. 

And, yes also to the HVAC- worth doing if it is that old, depending on the size of the house, it may only be $5000 to $10,000, and the new ones that are energy-certified will give you a tax credit, as well- not to mention, these will also help you sell our property faster when it is time to sell, as these will already be 'done'- not to mention, the new HVAC system will save your renters money every month in energy efficiency!

The doors windows appliances flooring ventilation hot water trim along with electrical wiring What was the outcome?

There are pros and cons to each asset class and which one fits with your time and energy in the management.