The main jet is not detachable, Bergy, you squirt carburetor cleaner through it in situ. I don't approve of what you did, because it would have made the situation worse rather than better if there had been gum in the jet along with the rust-dirt. At best, you didn't remove any gum that was there, and it will continue to build up slowly. However it appears there wasn't much gum, or you were lucky, and the dirt blew through the jet successfully. I don't think you've done any harm, and you got it working properly, so all is good. I'll close this thread.