I've solved the intonation issues with my Longhorn. The saddle needed to go back further than possible as it was. The screw is no longer holding the saddle to the bridge-plate, but I don't think that will be an issue. The saddle was too high at the back, to be able to fit under the strings, so I've filed groves where the strings made an imprint, so it tapers down at the back. It was nearly perfect then, except the G was sharp, so I filed about 1.5 mm there (which looks much rougher in the photo) and it's spot on now too.
Definitely worth the effort and made a big difference.
Definitely worth the effort and made a big difference.


but in this case, I'll make an exception...