It has also happened at least once on each of my properties.So the question is does anyone know of a valid phone number or better contact to be able to talk to anyone at Your Porter?  

Given the market in Okaloosa county, I think it is definitely valid. 

Your exploration of the ideas here is all valid.

So now the buyer is asking for another $2k for repairs and another $500 for a home 1 yr home warranty.

Your going to spend around $2000-3000 a year to lee it valid and current.You have schools tuition then you need to join a board of realtors, then MLS access , maybe lockbox access and continuing education.

If you did something like this and still had the other $60000 left then your exchange would still be valid but you would simply owe tax on the $60000 leftThere is a critter called an "improvement exchange" that could accomplish everything you want but it is much more expensive.

They know the alternative is a hot hot summer of misery.Do not buy retail units and provide them with 'warranty'.  

Is the right document to use a quit claim deed or a general warranty deed?

@Russell Brazil I am not sure if the above satisfies you and is a valid solution for agents. 

Definitely do not accept a quitclaim deed, you need a warranty deed.