(a) Any change regarding inspection fees may be assessed preceding any quarter of the year.(b) If the inspection fee is reduced or increased, the registrants and other affected persons will be notified 30 days prior to the effective date of the change.(c) The flat rate inspection fee, provided for in the Act, §63.071(c), shall apply to those registered products packaged only in containers of five pounds or less. It shall not apply to products distributed both in containers of five pounds or less and larger container sizes.(d) Tonnage inspection fees shall be assessed on the basis of the avoirdupois system of 2,000 pounds per ton.(e) Tonnage inspection fees shall be assessed on "as distributed basis."