I've been surprised at how difficult a good, solid shuffle rhythm is to maintain. No just a da-dum da-dum on 1 and 5 but one that has some movement, maybe 1-octive-5-3 and a walk up on the changes. I have trouble keeping the dynamic consistent and for some reason coming back to the 1 I always hit a single note, then hit the doulble on beats 2-4. Iknow Iknow: practice practice [hey, that's a shuffle!] And I slow it down and aim for consistency. But over time I can't say I've improved much. Any commiseration or advice?