I'm current rejiggering large elements of my story, so I'm working with a 20-page treatment per my consultant's advice. The idea of keeping it at 20 pages is that it will help me go into enough detail to adequately explain the characters, plot and setting without giving too much detail until I'm finally ready to do a full rewrite. However, the problem I'm facing with my current treatment is uneven pacing. Certain expository elements can't really be reduced in size much, such as the backstory of a fictitious society that plays a big role in the unfolding plot; other elements, such as action scenes, can be reduced to one or two sentences. This poses two problems: One, since most of the exposition is towards the beginning, certain plot points such as the inciting event or turning points seem to show up nearer to the midpoint than to the beginning; and Two, I'm having a really difficult time gauging how long the story will be, since the amount of action builds as the story progresses. The current treatment effectively communicates everything except for the pacing. Is this a common problem for treatments to have, or do I need to go back and revise it?