I would probably start monthly or bi-weekly "safety inspections" to A) document any lack of evidence of risks/issues to the tenant's safety to be prepared to legally defend yourself in the future, and B) to monitor for new/worsening damage to the unit.

I’ve defended myself many times, and they tend to be more flexible when you're the new owner of the property.

Also,  examples where the investor is plaintiff, and examples where they are the defendant. 

Our firm is primarily made up of EA's (enrolled agents) who specialize exclusively in the study of tax law and representation (basically if you get audited they can defend you in tax court).

This is unfortunately not their fault - however get the payoff that was provided to WFG and use that to defend yourself. 

I also check to see if he's been involved in lawsuits either as a plaintiff or a defendant and if so what kind of suits were they and how did they turn out.

If a legal claim takes place, it is highly likely both the property owner and property manager will be named co-defendants.

When I confronted them, they defended their quote, stating that they go off the industry standard and a portion of the labor time is for "testing the system after repairs to ensure safety."

I am not defending Renatus... no idea who he is.But people, try to learn a lesson from my post here.Stop telling others that you can learn everything for free on Youtube.Youtube is filled with opinions!

If my defendant replies to the UD, I may have to hire an atty to handle the trial.