If you did not do an appraisal, it won't cost you anything, I would find a reputable lender like @Chris Mason and start again.

Best way to grab accurate data is to walk through potential rehab jobs with reputable contractors

Tenant said it's bad quality plastic.

What third party administrators are reputable and have the lowest fees (I'm a Vanguard guy...and of the opinion that small management fees can kill your long term returns). 

Alternately, depending on your state a title company or reputable foreclosure trustee can be named in the mortgage as foreclosure trustee, who would only “Spring” into action in the event of default.Payments under the note can be structured by check or auto-pay, depending on the parties needs.Attaching amortization schedule is a good idea for amortized loans.

@remingtonlyman even a BiggerPockets contributor got scammed by a 1031 intermediary with good reputation and he did a video on it. ( His name starts with Chris) When choosing just has to make sure they carry good insurance in case something goes wrong.

Reputation is everything. 

If I ever saw that contractor around again, I would tell my client that this contractor is poor quality and/or unethical and that I do not recommend doing business with him because of previous violations of trust / reputation.

Remember, your reputation is everything, if you're legit, buyers will keep returning to you.

Have received a proposal from a reputable HVAC contractor to provide a 1 year Preventive Maintenance plan which includes 2 preventive cleanings per unit per year (and also includes testing, general maint, adjustments, etc) and includes 15% discount on repairs, 24 Service Calls and no Overtime.