We can offer you a better solution that will also solve your compatibility problem. Our vortex meter is programmed with the same K and offset that the original 1" CST meter has which is already in the Rachio and other controllers. We are now available on Amazon and you can find the product here: Model 1004-EX
Reminder of the advantage of vortex over paddle meters:
-No rotating parts to wear over time (or be contaminated)
-Calibration does not change over time
-Specified accuracy of +/- 2% (Many times better)
-Does not have to be removed for blow out.
-Low pressure drop
-Also, this version has display for easier troubleshooting.
-Comes with unions for easy installation.
-MSRP $119 with introductory price of $99