It caught my attention due to positive migration to this county.

And that's the exact scenario here.If you search BP you will find many examples supporting the position that an investor should never allow a party facing foreclosure, default, distress to remain in a property after settlement.

Some Builder reps are salaried, some are commissioned.

This creates a negative initial position.

Is there a lender that will loan just the purchase price, collateralized on one of my properties (2nd position, well under 70% LTV) so I can bid on it? 

You are not in a financial position to fund a long drawn out legal battle nor pay a significant retainer to an attorney3.

If you are primarily a lender you can't really contract your way into another position and avoid that lending position.Other issues come up when a lender takes a management role in the operations of any borrower.

CPA knows that the business has a lot of expenses that could be written off if the borrower does not need to show as much income as before because DSCR does not look at income and the client does not need to take a large salary from the business to afford their lifestyle.  

how do i find a positive cash flow properties ?

If the risk was too high visa vi the return, or if the investor was not in a position to accept the risks, then it could turn into a real nightmare.