I too have had some problems with those fibre packing washers. I bought a cheap generic carb kit on Amazon that came with float and a bunch of unidentifiable stuff for most motors up to 18 hp. The washers would not fit either jet. The float had to be modified to fit. The brass float needle thing had the wrong thread (probably metric). Now this kit cost $15.00. each. So I sent them back and ordered better kits for a total of $10 more. When it finally arrived, late, I discovered they were exactly the same kits but from a different supplier. Not sure the washers fit either. So I ordered just the packing washers from Sierra directly. Ten in a pack alone cost me $15.00 and they are identical to the ones included in the offshore kit.
It seems that carb kits have gone the same way as the points kits. Useless.
