u/IwantToGoFastPls

Hello, can you make max rank flasks without using concentration? I am looking at one craft order for Flask of the Magisters and its recipe difficulty is 490. My skills is 465 (using all max rank reagents). I am missing 15 points in Alchemical Mastery which should bump up my skill to 485. Does that mean that rank 3 flasks are never quaranteed without concentration?

I have maxxed out relevant skills in Fluent in Flasks tree.