I'll throw my 2 cents in just for the heck of it. My tractor bucket has a joy-stick, the back hoe has dual joy-sticks. I started operating fork lift trucks when I was around 18 (35 years ago). These all had dual (or triple) lever controls, & it didn't take much time to get the hang of moving both levers with one hand. Now, I find myself wishing ALL my tractor hydraulics were separate levers instead of joy-sticks (yes, even the back hoe!). It just doesn't seem "natural" to me to be moving the lever left or right & I often find myself moving the stick the wrong way. I also find it quite difficult to make the hydraulics move in two different functions with the joy-sticks. The "sweet spot" is extremely small & that makes it difficult to move smoothly. I'm sure that, for me, separate levers would be faster, easier, & most of all smoother, than the joy-sticks. So I say, give the levers a little time. You might find that they're not as hard to function together as you fear. Otherwise, I'd say check in the hydraulics forum.