As the title says. I realised that my nib was running a little dry and, as with a lot of vacuum fillers, I went to unscrew the piston knob at the top to break the seal so more ink could flow through.
However, upon trying I literally could not move this piston knob no matter how hard I try. Granted, I don't go to the gym every single day, but damn. This is ridiculous. I've never had this problem before.
Edit - I used it yesterday with absolutely no problems and I have had the pen for ~2 weeks. I unscrewed the piston knob yesterday and I didn't screw it on with a stupid amount of force.
Edit 2 - Even with silicon grease this thing won't budge.
Edited by 7heDaniel, 16 April 2016 - 21:39.