1. Visconti Wall Street. If the pen has ink view window, you can try to unscrew the nib and the feed, along with the nib/feed containing device. and apply silicon grease through the hole after you successfully unscrew all three pieces together. 1a. if the pen has no viewing window. then it's much easier. you can try to unscrew from the middle section of the pen. Looking for the seam connecting the two sections. And apply silicon grease, after you pull the power filler handle backward.