How tight to set solid lifters

So what is the change in temperature, in an engine? 100 degrees F to 200 degrees F? What is the change in temperature of a valve? 100 degrees F to 2800 degrees F? There are many variables in valve lash including where on the base circle you are. Yes, the base radius can be off. That is why I don't pick one point to set my lash, and constantly check as I set the other valves. Best is hot and running, or hot and static. You are up to operating temperature and you check the clearance at all the points on the base circle. The best check is to know your engine and have checked it. See thoughtful posts #88, #89, #90.