That’s a lot better Max!
only the Lattice Modifier is still in the wrong position in the Modifier stack, causing this:

Simply move it up, so it is above the Data Transfer Modifier, you can use the ‘dots’ on the right to move a Modifier up or down:

If you want, you can make the upper parts of the holes a bit rounder by moving some Edgeloops:
But overall looking really good!