So i totally missed something thats kinda wild... someone changed out the magneto with a batavus magneto and hid the other wires under the frame. I removed the brakelight switches (both broken anyways) and wired the horn into the light circuit, Everything is working! I could have sworn everything was stock but they did a good job hiding those wires.
I changed the carb to a 15 bing clone today (nicest new treats one) and its great. Thing idles for days, I changed out the front tire today, tomorrow ill do the rear and take it off the lift for a spin.
I got a hitch carrier for my forester, this bike is coming up north for some field/ trail adventures. I love the 5051/d for off road mopedding because its geared so low