Folks, I have 2 P99s, a 9mm and a 40cal. The recoil spring assembly is straight when installed under the barrel in the 9mm P99, but bowed when installed in the 40cal P99. Is it normal to be bowed in the 40? I called Walther and they sent me a new assembly which also bows when installed in the 40. Could you good folks with 40's let me know if your assembly is bowed prior to putting the slide on the frame?