In the case of a roof, etc. you could renegotiate a higher sales price (amend the contract) to cover the cost of the upgrade (if the market will bear the increase).

Make sure to look for the "amendments" also.

We signed the amended offer and that was itToday I get an email from my realtor stating that the seller's agent called her yesterday afternoon and said there was another offer coming in and that they were going to wait for that.  

@Dawn Anastasi thanks.... i'll go over there and see if it really reeks to permanent damage status.But I'm not a 1 strike your out type person.... especially if the situation is amendable(he's paid late fees and NSF fees twice totaling over $300)

If it really comes to a point that you just don't want to deal with them, first offer them a breach of contract option in the amount of 2 or more months worth of rent (It's called a contract/lease amendment) and tell them they lose their security deposit and owe rent for the current month or months they stay in the unit.

Where could I find a TREC Amendment to Contract?

Banks can't get out of their own way in order to close faster than 30 days.This is quite true, but what is somewhat ironic and comical is that the bank as seller will find an offer with a short closing time to be a stronger offer than the offer with a longer closing time; then once under agreement the settlement will get extended as needed by bank asking for amendment to the agreement via an addendum.

If there is anything in there that names a specific purpose of your corp and this loan would be a violation of that purpose, you'll need to amend your corporate guidelines with a full vote of the shareholders and officers.

Unless an amendment was passed and you missed it? 

I agree with the prior posts that 3 times is more than enough to repair the same screen and it is time for the tenant to be responsible.I suggest a letter to the tenant that amends the lease.