You mean initially loading filament? Ya know, after that very first install of the filament into the feeder mechanism, I haven't had any trouble getting the filament to feed. I don't know why that is, but I expected it to be more temperamental than it has been, based solely on how much trouble I had the first time. Although, I make sure to either have a good melted pointy tip from removing the same filament previously, or cutting the end of the filament to around a 45 degree angle before not-so-gently shoving it down the feeder's throat, lol.
If you mean keeping it feeding smoothly once it's loaded, the only thing that solved that for me was installing the universal oiler/filter just before the mouth of the feed mechanism. No more clicks or bangs, just smooth sailing for the most part.