Are you a tight knitter? I was, and I did have my tips coming unscrewed from the cables more often. I can understand why it would be this way but can't explain it. Since I've loosened up my knitting it rarely happens anymore. If tight knitting is involved my guess is that with any brand that things screw together you'll have the same problem.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper