I just put a repaired a Sheaffer Craftsman with touchdown filling mechanism. I put in a new sac, knocked out the nib and cleaned the feed. Once it was all back together I tried filling it with water. With the nib fully submerged, including part of the section, when I depressed the plunger I noticed that bubbles came out of the space right where the nib/feed meet the section. Is this normal? I noticed in Marshall and Oldfields book (2nd ed., page 104) that there is a seal between the feed and the connector. I did not notice one when I knocked out the nib. Could the seal be missing? and if so where can i get a new one?
thanks in advance for any help.