Car - ae86

motor - 20v

use - daily/track/dori

problem - assembling my diff and have play in my pinion and crownwheel

occurs/started when - putting diff together

Q: how much play should there be in the pinion as it feeds into the CW?

I understand how to line the pinion with the CW (with marking compound) so it feeds evenly into the CW.
basically want to know how much play there should be. Im assuming that there should be next to none.
anyone properly lined a diff that can give me a bit of advice?

thanks guys