My original 3.6 had 2 missing teeth, and it ran fine, but eventually caused issues with the starter engaging badly, and jamming.
I suspect caused by some careless locking of the flywheel for changing the cambelt.

But yes, not a great job.

85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think