there are 3 kits that fit variuos yrs of the 11's,, 1 for the 81's {tin tops} and 2 sets for the standards
you need to pull the slide needle out and check the number just under the clip rings,
------81 is easily distinguished by the needle and seat having the o-ring
------for the needles with ---- 5z1,------- ky-0526 nr
-----5gz6------- ky 0216
haven,t yet sourced a set for the 81,
available from motorcycle spares wharehouse in Melbourne, these are the kits i use, mainly because they are made in Japan