Hi everyone I need some help to troubleshoot an issue that I'm having with a Pneumatic Pump.  It has a leak, but I don't think that it is the piston or the one-way valve.  I think that there may be a tiny hole in the black casing. Please watch this short (2 min) video for details: Has anyone experienced a similar problem, or have a solution? I was thinking that I could use some glue (hot glue / super glue / two-part epoxy) to block the hole, but I didn't want it to seep in and block the air flow completely. I've had this pump for a few years, but I think this is the first time that I have actually used it.  If this is a manufacturing defect, do you think Lego would replace it? Any advice would be appreciated.  Thanks.