Alright, today didn't go as planned but I made progress. Here's what I did and didn't do.
- I got that poppet valve with the spring back in its place fine, that worked very well.
- I put the carbs back in the right order, they were switched (top and bottom) and the bowls were also mismatched, all fixed now.
- I attempted to reconnect the shift lever but the piece broke

The things 30 F*** dollars! Whatever. Ordered that today.
- I put on the starter solenoid, connected all the leads to the battery and the right spots on the solenoid. Tried testing the starter, nothing even worked, I had matched the wiring diagram in the factory manual, everything was correct. I took the old tester to it. I was getting 12v at the batt., I got 12v at the end of the battery cables attached to the ground and solenoid but through the solenoid I got nothing. When I attached it to the ground and then the starter I got .1v. Seems odd. I tried to test the starter next, I hooked up the positive fine, but there was no place to put the negative, so I tried a few things. I first tried the battery cable positive to the starter positive and the negative remained grounded on and exhaust plate bolt. no luck. Next I tried grounding it onto the starter holding it their, nothing. After that I tried holding it onto the little rod sticking out the top, nothing. I had the big red plug attached when doing this, and when I turned the key I got nothing. Guessing a new starter is needed? Maybe a solenoid as well?
Any Tips/help would be great to try to diagnose this issue? Put a lot into this motor and dont want to give up. Im not that great at wiring/electric work on motors, I understand some of the stuff but am not going to do anything else without some knowledgeable advice. THANKS!!!!!