Hmm, interesting, James, about the handles being too close. I just put them on my 18.5 and they look ok (haven't cooked with it yet). Are they too close because of having to spread them?
On the 18.5, I was able to bend slightly using my hands and the deck to press against (rather than inserting a tool with which I was concerned about over-bending). All in all it worked out week although it looks like the metal handles may require gloves/mitts/pot holders if they get too hot. Very minor considering how much stability they add to lifting the middle section.
Rich