Long-time lurker here… I collected pens many years ago, then moved that interest to the far background for a couple decades before my interest was recently renewed. While looking over my collection for the first time in way too long, I notice there are some pens that will require some repair. One of these is a Delta Astra that I bought new in the late 90s. I don’t ever recall inking this pen (or even dipping it back in the day), but even so the sac lever is stuck. I’m assuming this means the sac itself has failed. This is not something I particularly want to address myself, so my question: Is there a repair person someone here can recommend for this sort of problem?

Thank you in advance for your suggestions/guidance.