Different holes in diaphargm gasket

[fastjohn]

New on left original on right, note the difference in the size of the two smaller round holes.  This is where the disc valve is located.  With the original, the disc valve is able to pass through the diaphragm, no so with the replacement.   Is this necessary, so that I have to enlarge the hole?  This is for an OMC pressure tank with the black plastic primer button.

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