Modifier question: How to expose infill on sloped top surface?

Thanks so much Lexi! Adding another modifier is indeed possible. However, this one, too inserts its own new wall loops although they are set to 0.

I give up and will print it as described in my last post and will drill holes through the unneeded internal separators.

drilling the vent holes in this case is probably the easiest.
An idea for this issue.
cad model 3 parts for the bottom, and 3 for the top. 1 for the outside, one for the inside, and one for the infill. then in the slicer (orca, or BS) set the inside and outside to have walls, top, and bottom. then the infill to have no walls, or top or bottom.
With some cad packages this is not hard. I am unfamiliar with how in 360. I am fluent in SolidWorks.

I have a similar problem. Trying to speed print lots of copies of the same thing. Adding a modifier effectively does a bullion and modifies the new part. Effectively doubling the interface wall. It is not applying just the modifications. The interface is the outside of the modifier, and the inside of the “unmodified”.
For my use I want to modify only the items changed. I want the interface to be the same if not changed. So if I add a modifier changing the parameter loops. I want Only the loops changed. Not introducing the double wall situation.