I found the problem with your SVG images. In comparing your wking.svg with the one from the Alfaerie set, I saw that your file had this code:
width="200mm"
height="200mm"
And the Alfaerie file had this code:
height="100%"
width="100%"
When I replaced the code in your file with the code from the Alfaerie file, your King showed up at the right size even though your other pieces still did not. So, you have to make sure that the height and width in your SVG files is set to 100%, not to a fixed value like 200mm.
If you want me to, I could try doing a mass search and replace with sed.
I found the problem with your SVG images. In comparing your wking.svg with the one from the Alfaerie set, I saw that your file had this code:
And the Alfaerie file had this code:
When I replaced the code in your file with the code from the Alfaerie file, your King showed up at the right size even though your other pieces still did not. So, you have to make sure that the height and width in your SVG files is set to 100%, not to a fixed value like 200mm.
If you want me to, I could try doing a mass search and replace with sed.