I got a nice deal on my first Esterbrook at a pen show today. It's a 2668 and I got a lower price on it because there is a lot of resistance when unscrewing the cap.
When I got home today, I examined the cap threads and noticed that they are pitted in places. I gently ran a dental pick through the threads a few times, removing some black power, and applied silicone grease to the section. This smoothed it out a little, but it's still pretty tight.
I don't mind the tightness so much, but if there's something easy I can do to make it a little looser, I'd be happy to try it.
Perhaps the tightness will somehow also improve the seal and keep the nib from drying out?
Side note: I filled it with Parker Quink. At first the pen wrote a bit dry, with slight skipping, but now, a few minutes later, it's unbelievably smooth! I hope it keeps writing this well.
Edited by JordanN, 05 March 2017 - 01:04.