May i suggest something, im no expert or claim to be but all 40 plus carbs. that ive pulled idle tubes come right out but you need to put a small paraelll under the dykes when pulling them out. My procedure is just this. heat area up, lie a parall across body of carb. grab idle tube screw and slightly jurk up, come right out every time. Dykes same as wire cutters. lie them on parallel and jurk right up!!
Email me and will be glad to send you a picture if you like!!