based on the pictures, it looks like it is just the leaves on the ends of the branches, is that accurate? Aphid damage stays with the leaves, even after aphids are gone. That curl looks a lot like aphid damage. I'm not certain, but my guess would be that it is left over damage from the aphids. If that's the case, it isn't a big deal. The tree doesn't care much and the leaves won't be getting any worse over time. My little apple tree has a patch from when the aphids were there too.. it is kinda like a timeline. heh. And THESE leaves are the ones that were new when the aphids hit...
