Like many others, I was frustrated with my inability to "roll" the feed (tried about 10 years). I had buddies that could do it practically the first time they ever picked up a call (chumps!!), so I finally chalked it up to some anatomy issue, tongue shape or something... But about a year ago, I took a different approach to training, isolated my problem, and now I can do it well. I would like to share what I've learned. Granted, the rolling feed is multidimensional, so there is no single universal issue, but I suspect my problem was not unique, and so the solution I offer probably isn't either. We've all heard something like this, "pick a two syllable word like, ticka, digga, chugga, etc., Repeat it slowly, build speed over time." I had to quit thinking of it as a two syllable word, and instead, think of it as two one syllable words. For instance, I found I could peck/cluck with a "ti ti ti" sound quickly and easily, and could do short 2-3 note bursts of ticka (but never a continuous roll). However, my tongue always felt awkward, clumsy, and inconsistent when trying to peck/cluck with the "ka" sound, at least in comparison to the "ti." Previously, for years, I just dismissed this with thinking "I cluck with the "ti" just fine, and it's easier, so forget the "ka." Little did I know that I was stifling the development of the tongue coordination needed to execute a continuous roll... One day, lamenting that I would never be able to compete, it finally dawned on me that perhaps, my "ka" just couldn't keep up with my "ti." So I stepped out in faith and started drilling "ka." What could it hurt? So, ka ka, ka ka, ka ka ka. Sets of two, then three, up to 10 or twelve. Still awkward and clumsy. It took weeks to build speed and precision, but it came. I would also mix in alternating "sets" of "ti" and "ka." Ti ti ti ti, ka ka ka ka, ti ti, ka ka, ti ti, ka ka ka ka ka ka, ti ti ti ti ti ti... you get the point. Clucked out the rhythms of songs (especially a fiddle tunes) with "ka." I would begin and end each session with my best roll attempts to sort of monitor progress. After a month or two, I could tell I was getting better, which was exciting, but I never realized how far I had progressed until I finally recorded myself. I couldn't believe what I was hearing! It was like listening to a comp caller! All that to say, I recommend recording yourself to more accurately monitor your progress. Especially if you're impatient or easily discouraged. You may surprise yourself. So if you haven't tried this approach, don't give up just yet. Find (or develop) two phrases that you can cluck with. Drill the weaker one until it is no longer the weaker one. THEN stick them together. Build speed. Last bit of advice, eliminate issues with the variability/capability of the call, buy an RM.