My advice was to someone comfortable in their life path wanting to take advantage of current success to ensure future success while minimizing risk of loss.I wish I was able to take 3% money and turn it into 10-15% ROIs with complete confidence and 100% success. 

It will interfere with your investment future.

I also purchased an OZONE Generator and it seems to help.  

Okay I understand or I see and then tell them you’ll make a note of that and you wIll be doing improvements to the property over the coarse of time in the future .

@Paul Caporali remember this game is slow and steady.As time progresses you will find other opportunities to help you towards your next if you work at it.Keep building/creating equity you can use, keep networking so you can create relationships for the future(partnerships etc).

And in the future, you may want to include a statement that says your signature is null and void after a certain amount of days; that way if they have not redeemed within a certain amount to time, you should be able to continue to make preservation improvements.This post is a little bit old, but I'd like to hear what happened in your situation.

It is not a fixed lease in that he pays whether it is rented or not, but that he takes 10% of the rent and future increases (n lease up fees). 

@Emmett Gorman , Depends on how much net income your rentals are generating.

The 7-unit I bought as a value-add property and added about $100k in equity over the last year, so I'm not opposed to doing similar projects in the future if profitable.I know how to analyze a deal and calculate NOI when scouting properties (though admittedly these properties were acquired many years ago, before I knew much about RE investing).  

Also, start to really network with other agents, investors, etc. to both learn more about your business as well as being in the loop for future purchases!!