Quick question chaps the power jet size on my 21sp

http://tech.nsr-world.com/nsr/nsr-all/carb-settings/

from the table am i right in thinking that is #72 on no1 cylinder and #75 on no2 cylinder.

or is it #72 on both cylinder of the std 21 and #75 on both cylinder of the so??

Also does anyone have part number for the jets as allens has them, just dosn't know what #72 or 75 refer to