The epoxy layer is not completely cured, so it's not possible to work on the whole surface of the cowl.
But the inlet area needs to be built up on one or the other cowl to get a good fit. I'm using some thickened epoxy. The initial pass is quite rough to get the correct height, some more work will be needed to get a nice finish.
This is the outside of the inlet.



And that's the inside.