I recently picked up a rotopan, but found it to be extremely sloppy. My mine is in the desert so water is scarce and I can't use something that slops water everywhere. I like the idea, so I just corrected it's issues. I added 1/8 in Teflon tabs to each of the arms that hold it to the bucket. Added them toward the top where they contact the spinning bucket. This got rid of the wobble. Then I put a Teflon tab on the top of the spindle and epoxy over top of that sealing and stabilizing the shaft, now dirt cant get in. I also put a Teflon washer at the bottom of the spindle to make is not were the shaft seat. Next I found material clumping under the screen that took forever to clear, so I removed the screen. I now use two bucket top classifiers on top when loading dirt. The screen classifiers are 1/2 in and 1/4 in. The one that sets directly on the rotopan has to be notched to sit on the handles. Now I classify first and can push material to the center. My rotopan now spins smoothly, does not wobble or splash and the sides do not get worn down. It's now easy to use and more efficient. When attaching the Teflon tabs to the hanging rails I epoxy them in place then drill two .25 in holes crosswise and run .20 aircraft SS safety wire though the holes to secure them to the hangers. These tabs are 1/8th in thick by 1 in long and 1/2 in wide.
