Paying a proficient short sale negotiator is worth it's weight in gold to increase the chances of a short sale being completed efficiently and in keeping a strong line of communication with all parties.

Due to the rental property, I got a reduction in our personal insurance policy’s by $210.29. 

You will get a 2 copies of the unit's Full risk reduction Certificate.

However, after some brain training, the positivity and encouragement presented will carry much more weight than the negative. 

My understanding is that you cannot simply throw tile onto a shingle roof without reinforcing the trusses or roof framing for the added weight. 

I think if you looked at your balance sheet you've already more than dipped your toes :)  You may not have generated massive cash flow but depending on when you bought - the Keys, Brickell, Miami and any land out west suitable for a summer home have appreciated massively and probably shifted your asset/liability balance more than 99% of cash flow investors working at real estate.So another option feeds right into this without having to go with a management weighted DST or syndication. 

The risks here have the most weight in determining success or failure.

We also have 2 sump pumps in the same pit for backup.In your case I would definitely be inclined to walk away for all the above reasons or get a $10k reduction in price to compensate for the required fix.

With a majority of all things being equal, I selected our PM with weight on that termination clause.Certainly put us at ease that if, for whatever reason, either party is unhappy in the relationship, we can cancel the contract. 

I suspect the correct way to this of this is a reduction in the commission.