They are the experts-thats why we pay them through our nose -more than 25 K -and he refuses to modify a mistake he made that was pointed to by the contractor As many have attested to in this thread (Architects included), typically Architects do not do plumbing drawings.

I have made 30 videos on how to do things and put them on a YouTube page for our tenants, sent it out on an announcement, etc.   

As a custom builder for decades, I dealt with this way more than once, especially with new subs that had not worked for me before.Back in the old days we used to just go with a verbal ok, but in the last 20 years or so, it is imperative to have a written CO (even an email sent from the jobsite) from the Sub and then I would add 20-25% and submit a CO of my own to the customer.

I joined NARPM just after I started in PM and it was the best business decision I ever made.   

You made a good investment 

What made you interested in investing in this type of deal?

What made you interested in investing in this type of deal?

When looking at the profit to be made, consider your time and what you're worth.

And boasts 24/7 answering service.Anyone have any other companies that sell custom sized windows for DIYer/ contractors?

It was part of my plan before I even made the offer.