ATS spindle C7 hub removal/install

[AMPZberlinetta]

Hello, I have a set of ats spindles with c7 hubs (with stock length c7 wheel studs). I need longer studs for the forgeline and wilwood brake system. I have read that speedtech recommends that I send them the spindle to have the hub removed/installed. My question is, has anyone else had to remove and install their hubs on these spindles? and have they had any difficulty or need special tools to reinstall them? Torque specs? I've replaced hubs on c6 corvettes without any issues. I understand ats spindles could be different. Thanks for any input.