I once worked for a gentleman who taught me about "..ly" words. Words like normally or usually. These are words ending in LY which seemingly (ops another one) convey a certain course of action will be taken. However, when a different, unexpected course of action ensues, the justification given is the current situation is outside the "normal" range of the agreement; or it is an "unusual" situation.

Every LY word represents a potential trap door, allowing one party of a contract to deviate from the agreement.

Hard numbers and concise language describing boundaries are needed to describe normal operations. I do not see this language in the current LOA or other follow on emails etc.