If yur a newbe to the A833, could it be that you are short shifting? When you do that you gotta be on the ball. If you allowed the rpm to come down too far before slipping it into the next lower gear, the synchro can only do so much. Ideally when downshifting , the rpm needs to rise up to reduce the load on the blocker-ring. And if it has to also struggle against a dragging clutch while trying to accelerate the gear back up to speed, it's gonna complain about it.
Ima thinking it could be grinding simply because of operator error.
As to the clutch teeth; for a street car, they can be repointed and back cut for another go-round. I've been doing that since the 80s; hundreds of happy customers.
