First, I bought these to fit on a PRS SE Tremonti Custom (2017). After reading many reports of people successfully fitting them, without issues. However, in my experience, it wasn't so straightforward. First, it required a lot of force to get the washer rings into place. And it took a lot of force to press the tuning machines in flush with the back of the headstock. In fact, I damaged the locking mechanism on one of the tuners from pushing too hard against it. Perhaps I should have removed the locking screws first. That one locking mechanism is a bit difficult to turn now, but it does work.
The new tuners weigh in at 42g heavier than the PRS SE stock tuners they replaced. And I don't notice any neck dive or any other issues.
What I do notice is that it is very easy to restring the guitar. And once the strings were stretched and tuned, the tuning is now very stable. I think the guitar was good before, but this is a nice upgrade. I don't regret getting them for this guitar, even though it was a harder job than expected.