Packed variables are sometimes accessed using Decoder.decode and sometimes accessed by directly applying a mask and a shift.
The createLBPair function present in the factory takes the binStep argument as a uint16, which aligns also with packed size in the fee parameters and other uses.
However, the size for the binStep in the LBPairInformation is uint24.
The burn function receives two arrays that are iterated simultaneously and should have the same length. Consider adding a validation to ensure their lengths match.