I have been making Statesmen pens but am having a problem with poor erratic or no ink flow The pump unit seems to pull in small air bubbles but the cartridges also are erratic any help would be appreciated
First, Welcome to IAP. You will find lots of resources here, and lots of help. For your pen problem, first read here http://www.heritagepens.com/pencare.php, then replace the stock nib with one form heritage pens, and use Private Resrve ink exclusively (can get from heritage too.