They are simply suggesting that they either start to pay up, get a plan to do so, or legally start the eviction process.The "lets find the best way forward that benefits all" angle only works if both parties are interested in doing so.

Are there any park amenities that need ongoing service (pool, laundry, etc)Is there any deferred maintenance (roads, landscaping, pads, pedestals, etc)How are they managing the park currently (3rd party management company, self managed?)

This means that if something ever happened in one of your properties (injury, fire, etc) where the owner could have some liability, having the property owned by an LLC means that the damaged party SHOULD only be able to come after assets in the LLC, and shouldn't be able to come after you personally.

@Tevin Edwards -"Premium" owner financed notes on the secondary market have these characteristics: Single-family residential collateralOwner-occupiedBorrower credit 680+Equity of 20%+UPB of 85K or higherA licensed third-party such as calltheunderwriter.com (no affiliation) can inexpensively qualify your borrower and provide compliance guidance.

Because of that you should not charge either party.  

How do you handle price increase by your contractor that was not agreed to by both parties?

The tricky part is remembering where you put the blocking. 

I have an SFR on a 1year lease which was executed by an unmarried couple (both folks are on the lease and either could have carried the lease by them self).One party is moving out and the other person is willing to accept the assumption of the lease for the remainder of the term.Any ideas how best to execute the lease transition?

Appraisal came in $1,000 over purchase price so both parties felt it was a fair deal.

or do they outsource to 3rd party?