@What's_nitro: That's a project for a different day...
@linc: Thanks for that info, but it might as well be greek. Electronics=easy. Engine repair=lots of swearing and end up losing lots of money (the price of the attempted repair, and the time/labor charges to un-do the mess I did and then do it right).
I don't drain it per se, but I do run it until the engine dies at the end of winter. I plan on getting a new spark plug on the way home tomorrow, but I did test the spark and it looks good.
Below are a couple more pictures, one a less blurry image of the needle area, the other my home made needle valve I made.
