After utilizing the Do Not Call Registry for phone numbers, my list is cut in half, to about 3,000.

There are strategies that you can utilize here that can make it easier as well. 

No, there simply utilizing it, adoption, as is all there competitors, so it's not any business innovation except the ai creators, it's industry adoption to a evolved S.O.P.. 

I start with cleaning and repairs, then I apply it towards utilities, legal fees, late fees, and rent, usually in that order.I also have a holdover clause that says the tenant is charged 4x of the monthly rent, prorated daily if they hold onto the property after lease termination.

simple solution. the issue though is taking it all at once and having to start payments day one.. that can lead to some heavy drag on the money on your side if it takes you a while to find your deals. 

Same thing with bank accounts, utilities, etc.

Numbers:Purchase Price: $140,000Cash Invested: $42,000Income:Unit 1: $1075 + utilities. 

You have the right things to analyze here, but STR might be a tall order to do arbitrage unless you have the funds to go heavy on the furnishings.

Did they have bank statements showing utility payments for the rentals?

Thanks,A lot of lenders (mortgage brokers) utilize figure https://www.figure.com/home-equity-line/ if it helps you at all.