Have you executed on this method?

Major dry rot/pest issues or perhaps knob and tube wiring would make me hesitant as well. 

I called a company that an insurance had referred to do the drying .  

Granted, I didn't pay for them so maybe my palate was skewed a bit as those that were sharing - I had several hard core collectors as customers turned friends -  they were often proud to share the price and method of obtaining, but I just don't feel the cost was worth the taste.

I’d rather trust a professional with a moisture meter to see if it’s dry (just after or even during a heavy rain would make me feel better) before fixing the ceiling.

Some have found it pessimistic.Use the Enemy Method.

Additionally, you should probably instruct the PM to dry out the attic if you have with fans and / or a dehumidifier. 

@Keith CuddebackIn addition to the methods already mentioned for finding the outstanding loan balance of the primary mortgage, you'll also likely want to determine if there are any other loans/liens attached to the property that the seller will need to cover/pay off before they could transfer title to you.

I knew about the DBA method which seems to work fine, but this would probably make it much easier for the banks not to push back when they're unfamiliar (which almost all personal bankers seem to be like you mentioned).

In both cases, you get to be part of the team and learn from the process, acquiring invaluable practical experience that will serve you well in your future endeavors.These methods allow for learning and growth without needing to risk a substantial amount of one's own capital or the capital of others prematurely.