Parkker IM - SDF Chatter

[Reposting, as it didn’t federate properly last time] This is a parker IM I’ve had in my collection a while. I don’t usually go for Parker branded pens. I usually find them a bit boring/vanilla. But when I saw this one come up pristine on Ebay, I thought I’d give it a go. It looks nice, but sadly it doesn’t seal well. There’s a hole under the clip that lets air in. Why? I guess I could try to cover it. Bonus device in the background.