Oh haha.
It's hard to believe yeah, but... I've never seen a single Western in my life. Not wholly that is. I've only seen glimpses while zapping channels. The only two films I've seen that can be considered as such, though I do not consider 'westerns' in the strict sense of the term, are, as said,
Tremors 4, and
Valley of Gwangi. But without Underground Monsters or Dinosaurs? No. Nada. Nein.