I have used Araldite or another epoxy for all of my prop tubes (stuffing tube is, I think, an American term) and none have given me any trouble. Give the area of the tube that will be glued a good rub down with some fine abrasive paper and keep your fingers away from it thereafter. Wedge, tape or superglue your tube in the correct place and angle, then tape under the bottom of the hull to stop any leakage. Apply the epoxy from inside the hull, then prop the hull so that the glued area is as level as you can make it. (Even fairly thick epoxy will ooze away from your joint over the time it takes to cure.) Alternatively, build a little dam around the joint with wood or plastic to contain the epoxy.
Greg