I purchased a new SX4 a couple months ago. Up until now I have only shot 2 3/4" target loads through it. Goose hunting last weekend, I discovered that my 3" shells were hanging up when manually ejecting them from the bottom of the gun. When I press the tab the shell partially ejects from the tube and then becomes stuck against the carrier. It's almost like the shell is to long to make the angle out of the tube and past the carrier. It's doing it about 30% of the time. I'm not sure if it did it from the beginning or not as I was only shooting 2 3/4" loads for skeet so there was a lot more room to work with. I called Winchester this morning. The guy didn't care to put much thought or effort into solving the issue and just said to send it in. I'm going to take the weekend to look it over before shipping it off. Lead times on warranties and repairs are running about 3 weeks right now so I should have it back before things get to crazy. Any ideas on what to take a look at? I have torn the gun down except for the tube a couple of times. I can't really imagine the spring or plug in the tube being an issue but I am going to check them out this weekend. Other than that the gun is clean as a whistle.