IMO you're better to modify the socket, not the tube.

You can use an xacto knife to scribe a line on the tube axially. Scribe the line about 3/8" lg. This will raise a burr on the tube. If you feel the burr is too big, wipe the exacto blade over the line to scrape off some of the burr. If the burr isn't big enough, scribe again. Twist the tube into the wing. Do the twisting vertically so the removed material falls down inside the end of the socket. Otherwise the debris can jamb the tube up in the socket tighter than if you glued it in. After you've twisted the tube in about an inch, test fit the clean end of the tube in the bored socket for fit. Adjust as necessary.

If after this, you find the socket is too big, use mylar package tape a single layer at a time around the tube to take up the slop. When the fit is precise, a drop of ca at the ends will seal the tape and prevent fuel creep and stripping the tape when inserting the tube into the socket. If the tape is too thick, you might be able to get away with painting the tube to build up the diameter. Both methods will sooner or later be needed. After a dozen or so flights, the sockets tend to loosen up. After a summer, the tube/socket fit will need some adjusting.