here is what I had to do to get it back together.
1. Insert the firing pin into the firing pin spring, and into the bolt head. The firing pin will only go into the bolt head one way, so no error is possible.
2. Insert the assembly into the bolt body, and line up the slotted lug with the bolt handle. Compress the spring to insert the bolt head all the way into the bolt body.
3. Rotate the bolt head 90 deg. to line up the bolt head and the bolt body slotted lugs, then rotate it a FURTHER 180 deg. to line up with the UNSLOTTED lug.
4. Rotate the safety to the OFF position, and push the bolt knob back onto the rear end of the bolt, and hold it in that position.
5. Rotate the bolt head 90 deg. so its slotted lug is pointing AWAY from the bolt handle. Now comes the tricky bit!
6.Grasp the bolt head in your LEFT hand, and the bolt knob in your RIGHT hand, with the bolt handle pointing DOWN.
7. Go to the table and move your WRTISTS so that the bolt handle is sticking out to your FRONT. Hook the bolt knob on the edge of the table.
8. In this step the bolt knob will be sliding up a steep ramp toward becoming cocked, so considerable force is required. PREVENTING the bolt body from rotating by holding the bolt knob in its position on the table, rotate BOTH the bolt head and bolt knob 90 deg. by moving your wrists toward the table. SNAP!
9. The bolt is now cocked ---with the slotted lugs lined up with each other--- and ready to reinsert into the rifle.