I did an STH 2 mount yesterday as well. Used a Solly jig to set the toe for correct 325 BSL on the line then used the google template for the heel. Mounted on 2x4 first as I was setting for 325 BSL...

Same here and in a plastic holder

^^ I've followed this and have had good success. Typically drill with 3.6 then tap.
Also have been able to remove epoxy screws without the need for any heat.

Mounted my FKNA skis with FKS185 at -1. Praxis Lhasa pow enduro, carbon, 4/5 flex, with veneer.
These are amazing...

I do the same use a 3.6 and tap. Has worked with titanal and did not see volcanoes from it.
Have also done the same with DPS Pures a few times. Drill with 3.6, start tap then about 6 half turns,...