I bought a few used guns today. One was a Stoeger (E.R. Amantino) side by side in excellent shape. It had a set of 28 gauge full length tubes installed in the barrels. Before I totally screw something up, I thought I'd inquire here as to the best way to go about removing those tubes? I don't think they're rusted in there at all, but they're not just popping out either. Additionally, the tubes are fitted with screw in chokes of all things. Talk about overkill for a $300 shotgun, but it is what it is!