This is my first post here except for the introduction. But been airgunning and home tuning for several years and enjoy it thoroughly. I have a TX200 also and was never really satisfied with the performance even after installing new full power JM kit, new seal and new breech seals. It shot well but I have other guns that shot better and wasn't living up to my expectations. I finally installed a new JM cocking shoe and all the issues I had were solved. Apparently it never locked up properly out of the box. I gained over 80 fps and my ES is down in the single digits. So you may want to check that and order one if Maccari still has them as he is sold out a lot of the time. Just something else to check. So hello everybody and let me know Brazos if I can help any as I live south of Fort Worth in Burleson and wouldn't mind helping if I can.