I took the R9s Stealth to the range today. It failed to fire 2 of 12, 124gr. Gold Dots and would not fire any of the 115gr. Winchester silvertips, both of which, according to numberous reports, should be very reliable. I figure this means the pup should be returned to Rohrbaugh for repair. What do you think this four year old needs? a new spring? firing pin? what?