I bought a new carburetor for my 02 trx250ex and it the carburetor cap is has a wider diameter than the original. I can't figure out for the life of me how to remove the old carburetor cap from the throttle cable.
Where did you buy it from? How was it listed? Is the cost comparable to an oem one from Honda or was it a $50 special? If these don't check out, probably knock off. Especially true if you are seeing differences compared to your original one.