It was only by chance I happened into this thread again but after messing with mine I knew something seemed wrong. I am still working on mine. It's coming along but slowly. I need to peek into the wiring and it's a bit of a booger to get into. I've seen just a bit of oil seeping where the plug goes and want to be sure it only needs a clean up and not someone more worrisome.
Yes on closer exam that spike does look added on but I can't fathom a reason for it. It's interesting though and definitely makes your machine unique!