Just a heads up. I was using IDs to jump to sections on a page, but one of them wasn't scrolling down smoothly like the the rest. After much head scratching and testing, it turns out that it was because I was using numbers in the ID for the relevant section (it seems using any numbers whatsoever breaks it).
Is this common knowledge and I'm just a designer-noob, or have I uncovered a small bug?
Anyway, if that's just a limitation, at least I've put it here for others to reference should they run into the same issue.
Let me know if I haven't explained myself very well and I'll endeavour to be clearer about the issue.