I tell you which horses to go bet on, and if you win, we split the profits.

If you sign a lease for the new tenant and things stall, who pays for the holdover rent for the new tenant to stay where they are? 

Causing sewer backing up, late payment, stalling evictions, etc.So you have to realize you are dealing with a professional tenant now, and the game they play is to stay for free for as long as possible.The brother living next door could do the same sort of damage to the sewer line clean out as you are now experiencing; hard to say since the culprit for that cannot be identified, but very likely the brother is aware of the situation and knows how to repeat it.Your background checks that you did at first should now be questioned - seriously.

I think the residential market is stalling and will be in free fall shortly.

I'm running a business here, not a charity' kinda puts the cart before the horse. 

My issue is that the banks are stalling and daily changing their terms.

You can lead a horse to water but you can't make it drink.

I did do this at the same time but they stalled on the lease signing. 

One has stalled since March 19, one is merely a week so far.

Once they have moved in, you lose ALL your leverage and they will stall and BS you to the end of days and getting the $$ will be like pulling teeth.I'm in CA and do first month and deposit plus pet deposit if applicable.