I’ve printed similar objects with a different colored PLA, but I ran out of it and switched to this.
Is it possible that this could be influencing the outcome?
I have tried reducing the printing speed by 50%, but this did not seem to have a significant impact.
In machining/cnc land everything is a spring. I would suggest finding a way to print it with a more rigid setup. Maybe try putting some kind of support around the cylinder part way up.