"The building trades are not what they used to be."
No kidding -- through various remodeling projects we have had some workers that were awesome, but others that left a lot to be desired! (and these were people that we actually know personally...) We did a big tear-down-to-the-studs remodel of our bedroom and bathroom, and one of the last things to be done was a pair of bifold doors on our clothes closet... the guys that were working were going nuts because they were having so much trouble getting the thing in right; of course, I found the installation directions out in the garden some time later....
Since then, though, we've had a couple of different guys doing work for us that have been super fantastic, I really couldn't say enough good things about them.
(Example: remodel of our "guest bathroom." We picked out and bought a really cool vanity that had a drawer in the bottom for storage. Ummm... didn't actually work with the way our plumbing was situated, but those guys didn't even complain about it, they just said don't worry, we'll make it work. THOSE are the guys we all want working for us!)
I hope your sunroom ends up just the way you envisioned it, Ken -- that's the really important thing!!