Sorry this intro is so long but from everything I have ready on this sight I need to start networking, so here goes, nice to meet you all.

You WILL lose, so do you want to leave and get paid or get thrown out?" 

Search this sight and tons of information will appear.Back to your situation...

You do realize that if you miss that yearly payment you lose the house back to them along with the 50% you put up?

That means you are losing access to at least 25% of the total value of the property.If you take on a partner, there is far less cost (if any). 

Whenever you’re next to something less desirable, yoU are goIng to lose some tenants, and will therefore likely lose a few dollars off your rent rate.

You are far too soft and are going to lose money as a investor.

Live and learn.My advice will hopefully prevent them from taking you to court where you would likely lose if you try to collect any more from them. 

YUP  I know exactly what your doing and the asset class that sells on contract and these are prime targets better for them to sell to you for a little more money than get hammered by the local wholesalers who will just be out for blood.. with no care in the world how much these folks lose.. that's what wholesalers do.. its their job..  

Personally, I dump anything like that into the recycling sight unseen.