Just following up on this thread...
I finally received the new Flex Air hitch from Lippert early last month (October), and just got the rig back from the shop yesterday. They weren't slow... I told them "no hurry", as I wouldn't need it until spring... and I gave them a 3-page 'laundry list' of repairs & modifications I wanted done.
The Tri-Glide that failed on me had an 18,000 lb rating... but since Lippert was going to be out of stock on 18k Flex Air units for the foreseeable future, they sent me a 21k unit. Also of note... they aren't made under the "Lippert" branding anymore, but under the "Curt" brand... which they've recently acquired. Since Curt was previously a sub-brand under Reese, I'm not sure if they bought them out too... but that's another subject.
Anyway, I know it's just a hitch... but here are a few photos if anyone cares:
On an unrelated note... one of the things on the list was having them repair the bodywork from the tire blowout I had outside of Omaha last May. While not perfect, they did a pretty decent job on it.