If you're on top of the lifter plunger, there's no way you can know if it's collapsing some or not. It's an inaccurate measurement. As long as you think it's good, carry on.
I posted here because I know you guys have a lot more knowledge on this stuff than I do. I'm not arguing, I'm trying to understand.
The only weight on the plunger is the weight of a carbide pilot (that is being used in place of a pushrod) and the spring pressure from a dial indicator. I'm sure the total pressure on the plunger is less than 1 pound. That cannot collapse a lifter. So why is the measurement inaccurate?