Thanks for the reply and link. The fork is 1-1/8" for sure.
My question is : what is correct rake and axle to crown measurement. I got an email back from Scot Nichols, the original owner of Ibis, he has confirmed the rake at 2.2" aka 155mm. He didn't know the correct axle to crown length, but said it wasn't suspension corrected. Santana uses 155mm, but 1-1/4" steerer tube.
Co-motion has available forks with 145mm rake. Not sure how this affects the steering, it does change the trail. I now doubt that I'm going to find an "off the shelf" perfect solution.....some compromise is in order unless I go custom.