... noted the most difficult individual PT sections in all three ... 28-S1
4-star: 1-S3, 3-S4, 4-S1, 5-S3 ... C2, 79, 84
4-star: 2, 3, 4, 5, 6, 9, 13 ... to challenge myself with older 4- or 5-star difficulty ... challenging myself with doing the PT A, B, and C ...