A lot of those items should be within a typical lease agreement.

Not an attorney or CPA so cannot help on those items.

While they are good communicators, experienced with Section 8, and their software for rent collection is solid, we're increasingly concerned about a few key issues and would appreciate input from anyone with similar experiences:Turnover Fees Transparency:The turnover fees seem high, and despite our requests for itemized breakdowns and man-hours to justify these costs, we feel they may be taking advantage of our out-of-state position.

Just a few items that stood out reading your initial post. 

I believe it’s important to address these two items separately: First, there  are still ways to find out the identify of the member(s) behind the LLC and secondly these anonymity strategies do not actually shield liability because claims are still brought regardless of whether the members of the LLC are identifiable.

We know no more about him than you have told us, but just the list of items you mention give me pause - "He's been trying to get into real estate for 6 1/2 years."  

Good post with some items, most notably insurance that's generally just glossed over during underwriting.

Too many new investors blindly copy due diligence checklists from the internet, assign equal importance to each item and blow up deals over nothing.

However, we are going back and forth on a few items and would appreciate any advice or if anyone knows who to talk to locally to find out the answers to these questions that would be great.

I'm self employed, no other "job"I have STR insurance policies that show a line item for Loss of Business Income.