poosterwyk wrote:Hi guys - I'm setting my float valve levels on my MC28 and I found the same problem as "NSR lover " - each time I adjusted the metal "tab" on the float I got the same measurement ( 19 - 20mm) no matter which way I bent the "tab".I checked the Tyga procedure and found it basically the same but the floats were in exactly the opposite position to the ones shown in the Honda service manual - the Honda pics show the floats at the top and Tyga show them at the bottom although both are at 90 degrees.I set mine up the Tyga way and was able to get the required 13mm from the carb base, hopefully I have set them correctly ??

If I read this right you say "the Honda pics show the floats at the top"...the way I read the image posted by Andy above is that the floats dangle below the pivot pin, i.e. the floats are at the bottom.
This makes perfect sense, you want the carbs held precisely at 90 degree and the float will "dangle" using gravity to the setting position...surely if you have the floats facing upwards and the pivot pin at the lowest point the floats could "fall" off centre and give a false reading. Not sure why the Tyga image shows them in an opposite orientation.

Does your bike run OK with the setting you have?