oliver 550 tsx 811 775 carb throttle bore?

Can anyone verify throttle bore dimension on a Oliver 550 marvel tsx 811 &/or 775 carb. The manual I have states that its 1.09 bore it just does not seem right I don't have a carb to verify and does not seem it lines up with other marvel carbs unless its an oddball sized Marvell carb.
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Nothing odd about the body, But... the main jet is an odd ball
Not the same as what you find in the Deere carb.
But you can make them work
 

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