Hi, I'm new to the Opnebuilds machines. I have X-Carve 500 today, but I'm looking for a new machine to build with lead or ball screws instead of belts. The C-beam and Sphinx models look very solid and good, but they all have very little working height on the Z-axis. 25-30mm are allmost only for plate and sign making. My X-Carve has at least 80mm and that's nice if doing 2.5D or carving on thicker wood blocks. Has anyone done a modification to get more Z room on these Openbuilds machines? I'll guess the C-beam models would be the easy ones to mod?