Regarding your curled needles, many of my JBPs have some curled needles on them (this is the first season they are having them). I don't have any strong evidence, but I am attributing it to stress. Here's what they've been through:
1. Move from Seattle to Salt Lake City in the middle of the summer (2021)
2. Experienced their first SLC summer (hotter and drier)
3. Experienced their first SLC winter (colder)
4. Repotted this spring; probably should have given them a year to recover, but soil drainage was poor due to getting clogged with the mulch I used to overwinter them
Despite all the stress they got in the past year, they are all growing extremely vigorously this growing season, which is why I am not too worried. Interestingly, my JRP has zero curled needles, and is growing like crazy and hasn't seemed to care about the above stress. It's probably better able to handle the cold winters. I'll keep an eye on this thread to see if you see curled needles in future growing seasons.
Here are my JBP pics:
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