The tips will pop off sooner or later pretty much no matter what. I even used to use JB Coldweld and it worked pretty well...but still...often..."plink"...there went your phenolic tip. The way to cure this is do like I do. Create the tip with a 1/4 in. 5/16-18 threaded stem...and thread them down into an unbreakable ferrule thats drilled and tapped to accept the same. Then regular old CA gel will hold it on forever with no problems. I've never had one come off if installed in this fashion.
Now someone please hit me with some rep points for giving away top secrets to all on this forum!!!!