Hello all Yesterday I got my Noodlers Safety Pen, filled it up, all worked. Coming home today and problems started. First the nib did not want to retract, it was stuck. I twisted the upper sleeve and somehow managed to unscrew the sleeve so I could take it off, the inner rod stayed in. I screwed it back on. Finally the nib moved after pulling a bit more. But: it retracts only half way! I cannot get the sleeve to screw off again, nor will the top nob unscrew as in the video which the leaflet refers to (same for the top nob on the cap). Does anyone have any ideas? Thanks a lot Andy