I had the carbon fiber version back in 2008 and it worked fine for me. Fortunately, the new 2021 version has a beautiful rack and pinion focuser, not a Crayford. So there is no slippage and the new focuser is very smooth.
2008 - We have done quite a few laps around the sun since this photo was taken. The only thing I still have is the Telrad.
Which version of the AT-80 is that? I have an AT-80 LE which is a carbon fiber 80mm F/6 FPL-53 doublet. Yours looks like maybe it was F/7?
The focuser on mine is a GSO two speed Crayford, yours looks the same.
I like GSO Crayfords. They are easy to clean and adjust. They are designed to be adjusted on the fly and they are plenty capable. I use mine frequently with the 31mm Nagler and the 41mm Panoptic, not problems lifting those eyepieces vertically. An added bonus is that if the micro-focuser is damaged, which can happen with any micro-focuser, in normal times you can buy a $60 two speed upgrade kit from Agena-Astro that includes the micro-focuser and pinion. With many focusers, if the two speed is damaged, you are stuck. It's either use it as a single speed or buy a new focuser.