There are 2 rubber seals that go in the sleeves between the divider plate and timing cover. No silly cone used there. There are 2 gaskets, one between the divider and timing cover and one between divider and water pump. I typically smear some ultra RTV on the timing cover before installing gasket. Follow the instructions on this forum for the clearance of the water pump impeller and divider plate.
And I assume you smear some of the RTV on the pump mounting surface and divider plate surfaces, correct?
Thanks for the guidance on the sleeves and the forum instructions on the divider plate clearance to the impeller. I did see that and I have been following up to this point.