shastastan
Member
I've been using up some kits making pens for friends. In the last kit I used, the tubes were different lengths. I thought they were for some slim line style that I had probably forgotten about. When I assemble the pen, the writing tip did not come out the cap. I kept pushing in the mechanism until it did. I didn't have any instructions for this kit either. The pen looks okay. Today, I got an email ad from PSI showing replacement tubes for the Concava pen. Whap! sound of hand palm hitting my forehead. Somehow I had put some Concava tubes in a slim line kit. Duh!