After repairs, I am pretty confident that I can BRRRR completely out of it, leaving no money in the deal.

Highly recommend them and they're very easy to work with and can tailor to your needs from full hands on with all repairs to just managing and letting you deal with that aspect.

It would concern me if they can't or won't given you any kind of information at all, but perhaps that's normal.My takeaway though is that people are much more unpredictable than repairs.  

Although it is a new construction, your repair expenses might be minimal.

Other homes in the area are going for about 175K in good repair. 

We have a listing coming up in that area, asking for $599k (average condition, no major repairing needed) and it is priced to sell quickly. 

Be prepared for unexpected repairs, difficult tenants, tenant losing jobs, etc.

The properties I am looking at will cash flow a teeny bit, enough to cover mortgage, interest, insurance, and 20-30% for repairs and vacancy.

In order to overcome the problem, the Turnkey Company would do well to, at a minimum, invest in having a 24 hr number where someone knowledgeable, actually picks up the phone by the third ring and can answer questions and deal with problems. 

Also post Facebook marketplace, craigslist, Facebook yard sale, community websites, Nextdoor Write up a canned reply to zillow / email leads and save it on your phone and computer.