Sorry I could have worded my question a bit better.
Yip I know the MC21 uses TA22 and TA22B carbs.
I can see a couple of variations of FCR carbs on the net, looking at my carbs they look very similar to the FCR's. I thought the TA might be a type or variation of a FCR.
Allans performance shows measurements for their FCR needles, I guess my next step is to accurately measure my needles and see if they match with any of the FCR needles.