Finally, I started to make a big hole in GM's body.
First, I confirmed the hole position with a combination of GM and Z'Gok again.
After I confirmed the position, I drilled in the center roughly.
I will continue to expand the hole using a reamer.
Here, one problem came out. The reamer will hit parts of the back. I've split the fuselage again.
Arm of Z'Gok is larger than I thought, the body of the GM has almost disappeared.
So,,,I have to also remove the waist.
It is just back and forth.
Now, I found that to make a plan first , that is very important!