So we can help you depending on where you need to be.  Have

I guess we would be having a completely different conversation if these were C/D class tenants!

It's tremendously easier to change the subject property's qualities over changing how the market behaves, and altering the NOI is one way of doing that. 

Poorly behaved children tend to belong to lower-class parents that shift jobs and locations often, have poor credit, low income, etc.

In my experience it did help but you're saying your tenants also do change for a while but the change doesn't stick.I doubt that you can change the way they behave.  

My piece of advice would be "Have outs"Outs are important.

There are some great tricks  to save a few dollars that any good accountant will advise you on, but that is a discussion you should be having with your accountant.

It is rented for $1650/month (could probably increase it if need be). Have

To behave in such a manner is terrible and then to justify it by thinking that the one you are cheating is cheating others, is even worse.

Of course, we will be having our local lawyer take a look at the lease.I'm hesitant mostly due to the overwhelming legal power and experience that this tenant would have compared to our small LLC.