I think this article (previously shared also in this forum) shows it all: Diavolo Twin external LO modification by DF1QE
73 de Frank PH2M
Yep, orientation of the xtal is so, that F-connector is straight up in the photo, like in that link Frank mentioned. So with upper right corner we should go, sadly my soldering iron is way too big for that.
73 de Ismo, OH1NHW