stock windage tray installation question

Hi, I have searched through many of the windage tray posts but can't see this info... I'm buttoning up the bottom end of my 340. Using stock pan and pickup and stock windage tray. However I have used Miloden main studs and their windage tray installation kit. But I can't remember if the tray is supposed to sit up tight against the block (the oilpan to block surface) or is there supposed to be a gap there, so it sits 'up in the air' a little? Or maybe it doesn't matter one little bit? Or should there be a certain distance between the tray and the crank throws?

With the Miloden installation kit, even with spacer washers, the tray wants to bottom out onto the block surface.

Thanks