Hello, I'm looking for a kit that uses the same mechanics as the AR2, but I will use my own drive stages and control electronics. Also, looking to put in DC servos that have encoders. Is this possible with your kit? Did not want to use steppers as recommended for the kit at stepperonline.com. Any input on how I can do this would be appreciated. What size DC servos can I use that will suit the joint tolerances for the AR2? LJ