You are correct. I'm not sure what math I was doing there. I did have a back bow from being in a humid location for a while, and I must have measured the projection on the forward slope of the bow, giving me a falsely low measurement. In either case, I reduced the height of the bridge and the saddle slot too, and was able to get the action at 2.8 or so on the high e, so that worked. And the neck straightened out again. I missed that the Romanillos plan I was using had a lower bridge height, unlike the 'build' section of the book, by Courtnall.
Thanks for pointing that out.