the new chinese 2300 carb is an excellent carb. i would never change it- i had an old OS 61sf, which had a superb carb, and the 2300 carb is as good as or better than the carb on the 61sf. but if you have one of the older 2300s with a less than ideal carb then maybe these carbs from other engines would help. i run my 2300 on 10% omega and it is flawless.

ed