The problem is with the definition of closed. If closed is the off position then of course it should be in the closed position when off. The point is there is no "closed" position. The plate can pass all the way through the narrow point of the funnel. There is a narrow point in the middle, the funnel gets wide above and below that point. The proper place at rest is in the narrow position. The best at rest position is to be where the bottom edge of the plate is even with the exact edge of the narrow position. The narrow position is wider than the thickness of the plate. Again. the good place to be is for the bottom surface of the plate to be even with the exact edge of the narrow section. This is a distinct crisp line, just as the top edge of the narrow section is a distinct crisp line.

Its not that critical though, anywhere within the narrow section is fine.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician