I've recently invested in an MC21 for restoration and whilst it seems mostly original and no major problems, the carbs are both TA21 (standard jets) and not TA22. I've had a look at the specs in the technical section etc and there doesn't seem to be much between them, but I'd welcome any guidance i.e. do they need to be changed to TA22 types?
I don't intend to make any modifications initially (get it working properly as a standard bike first), but I will probably look at the airbox & wiresplice mods once the bike is back on the road and useable.
Any advice is appreciated - thanks!