Perhaps that was an issue with earlier models. 

Can anyone recommend good companies to root cause  and implement solution to fix this issue?

I’m interested in purchasing an investment property with equity I’ve developed in my current home, however I’m concerned that if I have an issue renting out the new home it can blow up in my face.

I see two separate issues.1.

I haven't had any issues dealing with AirBNB...yet.

.- China is issuing record debt to stave off recession, while the US bull market continues (Wallerstein).- Texas vs California Home Construction.

A lot of maintenance issues are repeated again and again on all the properties a PMC manages.So, a PMC has pretty good idea of what many issues cost.

I've run into some issues where clients get a little anxious over a valuation that came in low or a condition comes up that is fairly minor. 

You need an income that meets three requirements:Rents increase faster than inflation to offset constantly rising prices.It must be reliable; it continues even during economic downturns.It must last throughout your lifetime.These are all long-term requirements, so the current interest rates are not the major issue.

Do not rely on it for legal advice.