I picked up a Chromega 8x10 print drum recently. My Unicolor drum started to leak, and I hear the Chromegas are better built and use less chemistry. As it goes, the Chromega drum I got does in fact have a small leak. It's on the bottom cap and, strangely, it's not even at a seam. It seems to be leaking through the plastic itself. Is there an easy fix for this -- caulk or something?

Also, the Chromega drum has this centering ring which I'm unsure about. It seems to be used to keep it centered on the Chromega agitator. I wonder if I can use the drum, sans centering ring, on my Unicolor motor base. Or is there something magic about the Chromega agitator and centering ring that enables the magic "sine_wave action" that they tout?