On the setting float height debate, I have always found this to be a nightmare and fundamental to setting the baseline for all the rest of jetting set-up. I'm surprised that Keihin don't have an info sheet for this.
This is the only video that I have found so far that seems to give a straightforward and no-nonsense approach that is sufficiently idiot proof for me to follow. It also seems to concur with the basic set-up info in the KTM engine workshop manuals.
Ignore the 1st section and start at 3:08 for float height setting. 4:30 onward details vent hose rerouting if that is of interest. Nothing particularly new here but valid advice.
See what you think:
https://www.youtube.com/watch?v=96949V9hdVc