You haven't given much info here. Is Maverick Real Estate Property Locator a company, a person, software, what? Who runs it?
A few red flags fly at me:
1) Have they clearly defined the buying criteria to you and how to calculate it? If not, you'll waste a lot of time finding something for people who don't know what they want or at least how to communicate it clearly. If they don't know, how will you?
Anyone who "critiques the heck out" of the first 5 properties you present, as a matter of course, just to get you on "the right track" is wasting both your time and theirs. What's to say you didn't give them 5 killer deals up front? Why don't they just give you their criteria so you can "critique the heck" out of the properties yourself before you present them.
This is not a game and I would not recommend you birddog for anyone who can't tell you, in great detail, what they are looking for.
2) How have you qualified this group? Do they have money? Credit? Have they closed deals? Where? For how long have they been in business? You did check references didn't you? What did you find? Who has made money with them?
3) Be careful when someone offers you a piece of the profit at the end of a waiting period. I've owned a number of successful companies that never made a dime. I make sure of that.