I have dozens of gel pens that won't start up, many of them new, some used a few times. Has anyone had any luck with this issue? I wrote one company who I have a lot from & they said if I send UPC's they'll replace them, problem is most were in sets or tags are off. I'd like to save my investment. My bad for overbuying, not sure how to store them & then now maybe having to throw out quite an investment. Thanks for any help.