So... Any updates as to how best control an external item with 4-20mA?

I have a T7 and would like to be able to control a pair of pumps that need 4-20mA. The pumps have an internal resistance of around 250 ohms. Running directly from the DAC0 and DAC1 ports on the T7 I can't quite access the full dynamic range of the pumps. Is the best way to do this still using the solutions found here (https://forums.labjack.com/index.php?showtopic=3332) or will one of the Tick accessories do the trick?

Thanks!