Used the Amazon 100 gr. On both Beman and GT shafts. Tips align fine, fly good....same POI for both brands. I still have a pack of 50 gr. I dont need if someone does. BTW....with hot melt a TINY bit of slop is good. Rotate your inserts during installation and automatically centers the insert. All my BH'S align fine! I do NOT heat inserts. I heat the glue first, rotate insert in hot melt and spin them in until depth achieved. Then immediately in a glass of water for a heat sink to be certain. ZERO problems.