I just replaced my Tri Glide with the new Flex Air... I had some clunking , I have greased all " 9 " grease zerks, and still had it...
Over on the Redwood forum, we had a guy with a complete failure, those were the early warning signs.
I did not want to be like him , so before issues started, I just sucked it up, and purchased the Flex Air... Like stated. , the Triglide is no longer in production, BUT, there are a lot still made, and on standby for installation on new builds... Once they are gone, that will be the end of them.
By th way , the Flex Air is so much smoother than the Triglide!!!