And if this persists talk to him and then, if necessary, Post the necessary paperwork about these breaches. 

If the joist isn't a straight forward job, that could be fairly difficult, and may require bringing in a sub (unless your persistent enough to just get it done).I have done plenty of rotted subfloor work (an entire kitchen, second floor baths, termite damage, etc) but have never needed that room for taking my shower/bath, and have experience doing the work.

Your persistence and ability to deal with BS will serve you better than anything you read in a book or hear on a podcast.

The mosquito thing is something you'd probably want to pay a professional to come and help mitigate although being in FL, I'm sure that is a persistent problem down there.

With persistence like that, you next deal should be a much more positive venture.

Your persistence has gotten you this far, and I'd hate to see you quit after you've come this far. 

I was extremely persistent and even wrote a hardship letter.

Trying to find a PMI company to insure a 3-unit property with 5% down was a major headache, but with Mark's persistence, he found one.

In my humble opinion, there's arguably three key ingredients to successful real estate investing...time, cash and credit and maybe you throw in persistence as well.  

Inspirational as well as persistence and dedication pays off.