Case ih air drill w 2300 cart into variable rate drive?

We have a ground driven case ih 4006 double disc air drill with a 2300 two compartment cart. It has the slide on the bottom of the tanks that you manually open and close to adjust your seeding rates. I have hear of the Rawson drive system but is their any way of making that slide itself electric/hyd operated? On our case monitor there is a switch to adjust + or - I was looking to see if there was an add on from case to utilize that but I couldn't find anything.
We have a loup population monitor in the cab so the ability to adjust that slide from the tractor would be really nice. Thanks!

Case ih air drill w 2300 cart into variable rate drive?