So, I guess I need to find out:
1. How do I correctly put the trigger and hammer assembly back into the rifle?
2. How do I smooth up the action so that it doesn't feel like it was built from stone?
3. How do I load this thing without the bullets popping back out again?
4. How do I keep empty shells from hitting me in the head? I've had a couple now that have smacked me right in the glasses.
Thanks.
1. On my old 94 it is completely different hammer and spring assembly.
For your 94 I would slide the lower tang into the lower receiver slot. Then compress the "leaf spring" with your thumb or fingers and, insert the hammer from the top. Press down on the hammer and line up the hole. Once it is lined up hold it there and, at the same time insert the screw and tighten down. It should be fine.

2. Take a flat file and take off the top of the hammer at about a 45 degree angle. Also you can back off the hammer spring screw a little bit to release some of the tension. If you do both you'll smooth up the action.
You can see how the hammer looks like on mine.

3. I like to insert the cartridges with the rim almost beyond the loading gate. repeat for several, then push the last one in all the way to close the gate. Doing it this way will keep the gate open and, make it much easier to load.
4.

wear a hat. A cowboy hat works well.
If you wear a sombrero Mexican hat then you'll catch the fired cases in the hat too
You could wear those ammo belts across your shoulder and, look like Pancho Villa.