Can in-camera AF tuning be "stacked" with lens firmware micro adjustments? I have a D7000 which has the option for in camera AF fine tuning. 

I have a Sigma 18-35 lens which can be micro-adjusted itself using the Sigma USB dock.

Can both adjustments be "stacked" for a greater combined effect?

My d7000 has a back focus problem.  So even when I max out the in camera adjustment things are still slightly off. Wondering if I can max out the in-camera setting and FURTHER adjust focus with the lens settings to make things right.  

Thanks for any insight.