re: 'The bike i think was flooding badly as the 'Tang' was not fully compressing the pin in the bottom of the float needle. I bent the 'Tang' so it now compreses the pin and I will be checking the float height this weekend (when I can get my head round it!!)'
I'm not sure what you bent to what extent, but the float level is set with the tang just touching the pin, NOT compressing it. At that point, the mold line on the floats will be parallel to the carb body. That's a general rule of thumb. Adjust to what your spec says...maybe one or two mm lower.