I recently purchased a Tri-Power. It has the CNC kit. I received an owners manual with it but wasnt sure about the threading gears. It said something like it comes with 6 gears and 4 are in machine. My power feed works. Does this mean that I have all the gears, just need to re-arrange them for different configurations? Or does it mean that there are always 4 in the machine and 6 others that you can swap? Also does anyone know where to find these gears? Or have an engineering print to get them made?