The quick and dirty way if you are familiar with using Cloud9/general coding, would be to duplicate the existing AltServo code for the arduino and cockpit:
The files that are of interest on the arduino side are:
On the cockpit side, create a copy of the /cockpit/src/lib/plugins/altservo/ and modify:
Basically you can then just change references like AltServo, asrt, alts, etc (to AltServo2, asr2t, alts2 etc), reload the cockpit and update the firmware and you should be good to go.
P.S. If none of the above makes any sense to you, let me know and I can probably put something together for you.