Thanks Jim.
1. I did have some paper towel in the ports to soak up any drainage but they got removed for installation. Thanks for pointing that out.
2. The installation of the Wild1 575s made those grommets go away. Thw new width of the bars eat up all of the space and then some. The bars are actually touching the inner fairing inside the opening and the fairing cap had to be clearanced a bit to go over them, but only about 1/16th or 3/32nd. One other item I noted was that the metal brackets that hold the switches in the fairing cap is actually in contact with the bars, keeping the fairing cap from seating in 100%.
While I like the bars a lot and think they'll be great to ride with, they're not simply a plug-n-play upgrade. You have to be willing to do some modifications to make them fit. Most won't be immediately obvious, but there were a few surprises while doing the install.

Hmmm..... as you might recall, my WO575 install was more troublesome than most (needed longer throttle/idle cables etc), but I have the grommets back in place. Somebody advocated trimming them with a craft knife, and like a fool, I did that without trying them first, and in fact they'd have gone on without trimming. Some also said the chrome cover under the triple tree, over the new brakeline tee-piece wouldn't fit, and one guy (forget who) said he'd got it to go on by a little dremeling - mine went straight back on, no dremeling required!
Re the contact between the bars and the metal bracket, I can't quite visualise that, but again, no problem with mine in that respect! (I did see somebody say they had contact between it and the one-piece bar clamp, but I suspect they made a bad choice of clamp - original recommendation around here was to go for the Custard Chrome one, but it was dearer (unbelievably!) than the HD one (!) and there is a far more suitable HD one in any case, which is what I used (I believe it's stock on the 08 CUSE3)
Jim