In an effort to increase efficiency, the walls of the copper tubing used in the coils have been "rifled" on the inside like the barrel of a gun.

But no, I guess he doesn't want the remaining 20% of the work if he's not making an effort to make this right. 

OK, all advice above is correct; you'll need an Attny that specializes in L/T in Queens, and you must have good understanding of local L/T laws as well.CRITICAL-- you need to do a search at building department to make sure you have no building code violations of record, because a tenant can use ANY outstanding violation to postpone, delay and frustrate your efforts to get them out. 

Wish you nothing but success; with a team and your continued effort you will continue to do well.

But it ended up taking 19 gallons of paint, $40 of paid preteen labor, and about three months of random bursts of effort whenever it was sunny out and I was off work.

What I want to know about are things above and beyond these basics.We are still new at this, working on our first deal so I an genuinely curious about this.  

There are still deals but you are having to do a lot more marketing and put in more effort to get that same deal.

I think it is more of a case by case basis and really depends on several things, including:The level of competency to understand and implement the system in house or outsourcedYour timeline and how much effort you're willing to put into itYour budgetYour goalsOther systems you're already using that you may want to integrate withFeatures you may requireSimplicity vs capability, sometimes there are tradeoffs between systemsetc...Depending on a combination of the above as well as many other factors, one solution might lend itself more to your situation than others. 

Excellent resource material if you are determined to spend the time and effort doing it yourself. 

If some of you want to be added as administrators on this group, that will save duplicating all the efforts that have already been spent growing this group to 300 people.Here is the link to our group.