If you are using a purely investment driven DSCR product you shouldnt need transcripts at all, ever.

Are there other loan products similar to the DSCR loans that can also be utilized for investment properties?

It will sell mores easily and be a safer product.

We've been using Waivo, which is a very similar product to FF's Worry Free Waiver.

My GC primed and painted over them a few times thinking they were just old, stubborn stains that needed extra product, but they kept coming back after each rainfall.I hired a water intrusion detection company to help me pinpoint the problem - they said the new roof seemed solid and that based on infrared and temperature readings, the moisture is coming in from the partition walls.

When I want to refinance, I just look for a lender and vet them and analyze their loan products. 

It's very possible your broker is limited in the products they have available for you.

The only way to avoid them is to put more money down or you need a lender that offers their own product. 

I specialize in single family homes in middle class neighborhoods , working people providing a high quality product for tenants that stay for avg. 5-10 years.   

This is the best solution I've seen (https://www.amazon.com/gp/product/B075K6PHJ9/ref=as_li_tl?