I’ve put a couple of my drawings for EFHW cases up on Thingiverse, just in case you have a 3D printer.
Just search for end feed half wave you will find them. My name there is SpaceDawggy, I know odd init.
If you want one printed for you let me know, I have access to printers.
Just searched on Chris’s ID on Thingiverse and it came up with this link: