dutchy101 I have tried a few mods some more successful than others.
I am currently using this clump crusher and am very happy with it. My grinds are very fluffy and no clumps to be found. https://www.thingiverse.com/thing:4885588
I have recently discovered that I was over prepping my basket and getting channeling and wildly differing pours. I was grinding with RDT then WDT distributing then tamping thinking I would get consistency. I am fairly new to manual espresso lately. Now I grind into portafilter use the wdt tool to very gently spread grinds evenly careful not to do too much deep prep or over stirring, basically using the WDT tool to level the grinds nicely then tamp. Now my pours are much better and consistent. I believe I may have been allowing the fines to fall to bottom of basket and clog holes causing excess pressure and channeling. less seems to be more in this instance.
I also have an anti-popcorn device installed which I believe may help consistency. However on occasion if you dump all beans in at beginning then turn on machine it may only grind a few of the beans and then you will find the rest sitting atop the popcorn device waiting to drop, but a push with your finger solves the issue.
I have also tried a different clump crushers not listed above that actually removes the clump crusher all together and focuses on flow and zero dust. I did find that I could completely clog the grinder if I ground close to touch point and fed all the beans at once. If feeding slowly there were no issues. It did produce very nice fluffy grinds with no clumps and very little mess. The download files are located here: https://grabcad.com/library/df64-exit-c … ownspout-1 and the original post is: https://www.home-barista.com/grinders/hacking-df64-exit-chute-t79493.html
I may revisit the above chute since i have changed my prep routine and am grinding quite a bit coarser now and the clogging issue may be non existent then. However the grinds are so nice with zero retention with the first clump crusher there really is no reason to change.