A method of assigning transaction timestamps for use with a database that includes temporal data and may include non-temporal data. The metering orifice arrangement includes a metering orifice piston to which control pressure tapped off between two throttles of a pressure divider can be applied, wherein at least one of the throttles is variable. A flexible coil can be mounted to the distal end of the elongated pusher member to provide for improved tracking. The assembly may include a tensioning system for biasing the load bars to the secure position to aid the user in lifting the cargo.