273 Commando

I drive mine weekly, sometimes more than that. It also sees a few track days per season.

I adjust the valves once a year. They are never very far out and if they are it's a few thousandths on the loose side. No big whoop. I run them .004 tighter than the factory spec anyhow.

I've yet to have eve met someone who hates solid lifters that has actually run them and knows how to adjust lash properly.