Tonight I fitted the titanium piston. I never thought that you could make much difference to the stage 3 gun because it shoots really nice but..... I took out the stage 3 kit and put in the titanium kit. The titanium piston is LIGHT - I didn't believe how much difference it could make but I weighed the standard piston, the stage 3 piston and the titanium piston ..... you will see in the video. It needs more preload to power that light piston. The stage 3 kit needed almost none - the titanium about 20mm. The shot cycle - my god, the difference is marked. Almost no sight picture movement. A fast shot cycle but really nice. Very, very nice. Impressive stuff. As ever with Pauls work, it is beautifully made - the new spring provided has the ends dressed and polished, the guides are perfect and the machining on the piston etc is a pleasure to see - almost a shame to hide it away in the gun. There will be many pellets going through this gun this weekend