I have a samsara tip on my TNT break cue made by koinnkid. Never had a problem with it since it was professionally installed.
Although, I initially tried I turn one of my junk viper cues into a break cue but I had the same problems with the tip coming off. After some research I've come to the conclusion that cheap ferrule material is the source of the problems. The viper cue had some cheap, soft PVC type material for the ferrule whereas the TNT cue has higher quality brown canvas phenolic.
Change the ferrule and you'll probably solve all your problems.