First check I would do is to make sure its consistent all the way around. Mine is not. Its tight in one spot and loose in another. I think my Cam is bent.
The way gears are hobbed makes it virtually impossible to make one out of round,,,,,,,well OK it's India,,,,,,,
It is much more likely that the cam shaft is bent or that they somehow managed to barf up the cam gear when they sledgehammered the pin. If your engine isn't new you will have more slop at the places where back lash reverses due to wear. Correct backlash would be anywhere from none to .003 would be called acceptable at my shop.
Remember that tooth contact occurs at two places. Thus the correct amount of offset and the position of the off set is not a simple matter of X lash equates to X offset needed. The idler position could be incorrect to the cam, or the crank individually, or incorrect to both in and even distance, or incorrect to both in varying distances.