The drying invoice lists more machines or days than I remember. What records should I request?

Ask for an itemized invoice, equipment placement/removal dates, agreed rates and supporting drying records. Compare them with your photographs and messages, then ask the contractor to explain specific differences. A clear reconciliation may resolve a misunderstanding. If insurance is involved, give the adjuster the same documents. Keep the discussion separate from whether drying is complete, and seek appropriate advice if a material billing dispute remains unresolved.