Lifter preload with rocker shaft

Just for fun, I disassembled a lifter tonight from the donor motor.

I've heard that an easy way to figure out existing preload is see if a small paper clip of known diameter fits between the cup and retainer.

 

Thanks Larry. Any Suggestions on where to get one decent one? Also, do I have to have the lighter checker springs in when adjusting length?

 

Thanks much!