How do I fix this Rotation using Vector3.new(tune.Rotation.X, -69.598, tune.Rotation.Z)?

(Just the first and the 11th one only, just to make it short) How do I make this working using this method: Vector3.new(tune.Rotation.X, -69.598, tune.Rotation.Z). Because on the X axis it is 90 until you get to 11. which is -90 and not 90 anymore. I want the Y axis to change only. Is there any way to make it work? This is the list of the rotations:

-- 1. -69.598 (Rotation: 90, -69.598, 90) 
-- 2. -51.347 (Rotation: 90, -51.347, 90)
-- 3. -32.948 (Rotation: 90, -32.948, 90)
-- 4. -17.872 (Rotation: 90, -17.872, 90)
-- 5. -0.45 (Rotation: 90, -0.45, 90)
-- 6. 16.889 (Rotation: 90, 16.889, 90)
-- 7. 33.83 (Rotation: 90, 33.83, 90)
-- 8. 47.591 (Rotation: 90, 47.591, 90)
-- 9. 61.501 (Rotation: 90, 61.501, 90)
-- 10. 77.796 (Rotation: 90, 77.796, 90)
-- 11. 81.181 (Rotation: -90, 81.181, -90)
-- 12. 64.382 (Rotation: -90, 64.382, -90)
-- 13. 48.355 (Rotation: -90, 48.355, -90)
-- 14. 30.9 (Rotation: -90, 30.9, -90)
-- 15. 10.731 (Rotation: -90, 10.731, -90)
-- 16. -6.548 (Rotation: -90, -6.548, -90)
-- 17. -23.665 (Rotation: -90, -23.665, -90)
-- 18. -40.07 (Rotation: -90, -40.07, -90)
-- 19. -60.452 (Rotation: -90, -60.452, -90)
-- OFF: -89.282 (Rotation: 90, -89.282, 90)

P.S. It doesn't have to be for all of them. Just only the 1st one and the 11th one.