Based on your photo, "section 1" unit the edge is 1/4" from the point. That is correct way it should look. Your unit 1 and 2, by the nature of the unit, won't have that.
There are several possibilities as to what has happened. Because I believe your Section 1 unit is correct the possibilities are:
Your pattern may have given you incorrect sizes to cut for units 1 and 2 (the colored fabric)
The sections for Unit 1 and 2 were mis-cut
Have you checked to see if the pattern maker issued a correction?