FBO plate over advancing

one more observation:

Halifax got me thinking, my tbar is a 15, so 30* at the crank. I wanted 16* at the crank, so roughly half the slot. The picture below has the 16* slots under the tbar. The inside of both pieces are flush, the fbo plate should restrict the travel by more than it does.

my micrometer needs a new battery, so I wasn't able to get slot readings last night

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Excellent comparison. You can actually see how inaccurate the plate is with no question whatsoever. The plate slt in that position "should" be about half the length of the slots in the governor and clearly it's not. We're being fleeced.