The Duke ball, a longstanding friend to seam and swing bowlers, has helped and Henry acknowledged it doesn't hurt to have that ball in his hand rather than the Kookaburra used in Australasia, but now under threat from the makers of the Duke.
"It swings nicely, especially when it's brand new. It does help you out a bit but you've still got to bowl in the right areas," he said. "But I've felt really good for a wee while with the ball. In these conditions, you've got to bring the stumps into play, bowl nice and full and be challenging people's defences as much as you can."
Early-season conditions have also helped, although the pitches haven't been as green as might have been anticipated, and have been on the slow side. Henry's contract is for seven first-class games, then eight in England's one-day competition, a nice little period which will still leave some time for a break before next summer.
English cricket has introduced a rule where the visiting team can choose to bowl first, rather than have a traditional toss. So far, Kent haven't had a toss yet. They were sent in against Gloucestershire, then chose to bowl at Durham and Cardiff. Henry isn't sold on the idea, which is to mitigate against groundsmen preparing pitches to suit the home county, and would prefer there was a toss.
"You've still got to back yourselves whether batting or bowling to win the game. The toss, it's just part of the game and having that uncertainty or bit of luck is part of it."
Henry has stuck pretty much to what works for him, rather than tinkering much in England. He appreciates the importance of getting batsmen coming on to the front foot.
"I want to make sure I'm not wasting the ball by trying to beat the outside edge, but trying to bring lbw and bowled into play a bit more."
So far, so good, and Henry's loving his time at Kent. He's played nine tests, taking 25 wickets at 46 and has an impressive 67 wickets in 35 ODIs at 24.5. He is the sort of bowler who doesn't let the team down when given a chance. His record shows he gets good batsmen out. Expect another solid push towards nailing more opportunities next season.