Steve's right. Also, springs do not look at clocks. Cycling the spring will add to the cumulative metal fatigue, too. But, have you ever heard of a valve spring breaking in an auto engine? In a four cylinder four stroke engine, at least two of the springs are under extra tension all the time. Breakages are extremely rare, as in unheard of.
Originally Posted by Steve Smith
Al that said, I don't leave either my cameras or my guns @#!*% .