Thought this might help someone.............

Yes it is extremely important to measure the level without any compression on the float needle spring. I was planning to adjust mine this week but find myself still waiting on the regulator I want to install. When I do finally get it I will post pictures here of the proper way to set a float level on a weber DCNF And as an extra added bonus I'll show you how to make a simple tool to do the job accurately with only the two hands god gave us all

Anyhow, as a matter of fact, I realized that a gap of one or two mm. is not so important in this kind of carb, as they were built to work in automotive applications, with all the lateral forces cars have.

took the carb down today and made a few interesting observations,first off discovered the correct float level for this 90 906 is 42mm. don't have an explanation yet but I will in a few days.................