Also Jan shared with me the the 3D files for the different Skyfire head castings. The Mikini casting is pretty much identical to the larger Skyfire SVM-2 head casting with respect to the shape and spindle bore (140mm wide head) but the linear bearing block bolt holes are different and the ball screw bearing is different and is a giant pain to make work on the Mikini he says. Boring is the best way to go. If I can somehow figure out a way to mount a boring tool to the table I may be able to open the 80mm bore to 90mm as well as drill/tap the new bolt hole pattern for the BT30 flange.