Coupling an AD8336 with an AD8335

I have on an electronic board four preamplifiers AD8336 with a quad low noise AD8335.

My problem is the coupling between them. The datasheet of the AD8336 say to put a 500 Ohm resistor on the output and on RFB of the AD8335 i put an 2,61K resistor and i remove the 50 ohm resistor in input.

Do you think i'm wrong ??

Thank you for helping me...

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