I too have had the same problem with the 550b primer feeder. I also tried what the gentleman did in the video that Youngeys posted in his reply. He is correct...it helped mine but not 100%. But fear not! Get on YouTube and click on "Dillon 550B primer feeding issue". The guy has a great video explaining what to also look for and what he made to fix his problem. I almost made this replacement part myself until I went on e-bay and found a guy who makes and sells this part. After you watch the YouTube video, go on e-bay and type in " Dillon 550B Primer Track Bearing Plate Upgrade". I received mine the other day, and between tweaking the rod a little and installing a new plate....problem fixed! Of course, we still have to make sure this area stays as clean as possible. Nothing will work on any press if parts a cruded up.
