Don't force it... get a bigger hammer.
A failure will not appear until a unit has passed final inspection.
The compromise will always be more expensive than either of the suggestions it is compromising.
First Rule of Acting: Whatever happens, look as if it were intended.
The Ninety-Ninety Rule of Project Schedules - the first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.
Every clarification breeds new questions.