If there are variations in NOI / expenses, what were the causes?

Being a real estate lawyer or trial lawer you will make up that money in no time; the banking industry is a yo yo industry, most major banks have had drastic reductions in force and they will continue.

I'll agree with @Ben G. there are a lot of variations in this business.I was at a seminar on Saturday with several local speakers.

About a month ago after working weeks of 16 hour days and a 2 week trial of trying to put a guy in prison for sexual assault I began thinking about giving up my day job. 

There are some variations of this rule, but generally:Rent-Financing=x amount.x amount multiplied by 50% will be your monthly exp, so basically half your cash flow.

Trial and error basically. 

As one example, why don't the Democrats address the need for tort reform, eliminating defensive medicine, and the escalating malpractice insurance costs which drive some specialists out of practice, all a huge drain on the cost of health care (maybe because they won't go up against the trial lawyers who benefit).

J Scott:Apply your same questions about eugenics to slavery.You can come up with situations in slavery that benefited those in slavery but that does not make slavery right just as it does not make eugenics right.This is where governmental laws must speak to the "generics" of a situation but the application of the law (in a trial situation) is judged by the judge according to the specifics of the case.

So I signed up, and did the 3 day trial of Investway.

The private financier can be unsecured (if he really trusts you), or secured by hypothecating a note and deed of trust offered by the JV (you and the rehabber jointly).Another variation is you and your private financier form a JV, and then enter into an equity sharing arrangement with the rehabber.