I just took delivery on a Kahr cm9 and to rack the slide it takes a very strong effort. I can just barely get it to chamber a round using both hands and nearly oll my strength. The gun has not been fired yet. Is this normal and the slide will get easier to pull back to chamber a round after the 200 round breakin? Or is there some other reason for the extra strong spring effort? I must be getting weak in my older age.