We all use different methods , different glues etc.
Those that use poly glues love it.
I have worked with Polyurethanes and I would rather unstick my fingers that wear gloves or walk around with stain on my hands.
I have made a couple of Barons and noticed the holes weer a little large but since I use CA exclusively I have found different methods to use and not have problems.
The key is knowing what method to use.
The most important step is scuffing the tube.I don't just remove the tarnish, I left them "bounce" on my bench grinder and when the are done in a few seconds, they are ROUGH with a visible raised surface.
I sometimes use paraffin to seal the ends.I do this if the hole is over sized or if the blanks is a porous material, punky woods, corn cob, some antler.
This is where the use of thin CA comes in.
I may choose to "stabilize from the inside out"drizzling the CA in the tube and revolving it to get good coverage.Redrill the tube after a spritz of accelerant.
When I use the paraffin , I scrape the end of the tube over the block of wax,plunge a rod in the tube to Pack the wax and leave it flush with the end.
When I go to glue it I put a bead of Thick CA in the end of the blank and glue on the tube as usual.
As I insert the tube with a twist motion the plugged end will coat the the inside of the blank some of the glue will "squeegee" out and remain on the end I inserted the tube from.
I hit both ends with accelerant of my choice.
Acetone, alcohol or the commercial stuff,what ever I have on hand.
To do this is not as difficult as it is to type it.
The beauty of doing it this way is other than the redrilling and "punching" out the wax doesn't take that long to have a blank that is ready for turning in 5-10 minutes.
I know many use base plate wax from BB and when my 20 blocks of 10 year old cheap paraffin are used up I may try it.
For what ever reason you choose to use the adhesive you do is your choice, but I have never had a tube push out by using it.
I have had them "grab" but it is an easy fix and puts off that pen for aboput 2 days.
I just glue up another and turn it the same day.
The common term is Super glue, not Magic glue.
It does need good coverage to work