Now how hard can it be to change jets in any carburetor? Well, in this case after you set the carburetor on the bench, you take off the top, grab a screw driver, stick it in the slot, turn the screw driver counter clock wise and you have 'em out. Great theory, I can't get 'em to budge, my neighbor took a shot at 'em too, he was afraid we were going to damage the jets so we stopped. I thought about heating the jet but........with a die cast piece what would/could happen? (This is a twenty? year old Carter, base ID is 2639 9G 5S) I am certain that I am not the first person that has encountered this problem, I just hope someone that has the solution can share it with me. Thanks in advance.