I picked up a gently used Tikka T3 lite in 243 recently for my young son to shoot. At the range he had difficulty closing the bolt so I assumed he was just weak and inexperienced cycling the bolt. When I assisted, I noticed it was difficult to close compared to other almost any other bolt action I have. We were shooting factory ammo. It seems I have to push it forward hard before it will lock downward. Any recommendations on smoothing this out?