I suggest either drilling the blank SLIGHTLY larger than normal (or if this is not possible, drill it as normal and carefully enlarge the hole a bit with a dowel wrapped with sandpaper, keeping it as round as possible) Then paint the inside of the tube with Testor's model paint and a Q-Tip. I usually put on 2 coats to be sure it gets a good coverage, and let each coat dry overnight at least. I nearly always use Sumo/Gorilla glue for tubes, as I've just had better luck with it than CA, but either one will disolve the glue if you play with it too much. I sit the Sumo glue in a glass of hot water to make it nice and runny, rather than it's usual thick self, and using another Q-Tip, put a light coat inside the painted blank (don't rub too much or it will start to disolve the paint.) Then put a ring of glue around the sanded tube and twist it a bit as you insert the tube in the blank (again, don't twist it too much or pull it in and push it out a lot or the paint will disolve and move around, which could cause it to show through in some places...)
This method has worked very well for me, even on blanks that were nearly completely see-thru, since painting the blank rather than the tubes prevents you from seeing the glue, or bubbles in the glue... (and credit where due, I got the idea from a video of Curtis explaining it...)
