Ah. No problem mate.
Anyway, going back: I'm 3000% sure this playthrough is at least 3x longer than my previous ones and still no Shevars. Also no coil guns.
I'll post a screenshot of my Research UI in the next few days (got hit by a flood; no internet connection at home at the moment); will give you a rough idea where I am in the game's tech tree.
The second line is what confuses me. This is by far, the longest playthrough I've made and I've only seen bloodspiders, ortnoks, and tamans. Maybe Muton altered something?