All that cash comes from the LP, who makes $6,300 less.It certainly seems like this is 100% skewed in favor of the Sponsor at the expense of the LP, based on my understanding.

Here in NYC, landlord/tenant laws are increasingly favoring the tenant so you might have better protection OOS.That being said, NYC is still a great option.

As I see it, you either perform to meet the bank's new demands, or leave this bank in favor of another lender. 

Some loans will come with defeasance or yield maintenance, while others will have step down prepayment penalties.A good loan broker who specialized in MHP debt can guide you with respect to the right choice for you as the buyer, which type of lender will be best suited for the park, where the terms will be the most favorable, and where the hurdles will likely be.

I don't think either of you do yourselves any favors in this exchange, to be frank.

As I caught the real estate bug I sold off all of those other assets in favor of cashflowing real estate to reach toward financial independence.

Does the signed agreement I have with this contractor shift the liability to them in the court room, and are they now responsible to pay damages (if the judgement is in favor of the tenant) even though they were not named in the lawsuit directly?

On the other hand, the deal structure might be tilted in favor of the capital partner at the expense of the sponsor's investors.  

If he knows the house is worth 170, is willing to part with it for 160, but you offer him 200 with favorable terms that still produce cashflow, he may see it as a win win solution 

In exchange, the homeowners receive affordable design and construction, free project management and favorable financing.