The solar charge controller I use (sunsaver MPPT) has adjustable setpoints that should keep the trojan's happy, I just need the meterbus adapter to connect with the software to update the settings. Sounds like it would be great insurance.
The programmable settings are a large part of the functionality of the controller. I have the same controller and have the absorption setpoint at 14.8. I choose not to use the programmable equalization function because I have other chargers that are capable and I monitor SG levels throughout the year.
I think a lot of folks are also using a serial to USB conversion as USB is easier to manage for connectivity. Do you have the serial cable that ships with the controller or are you using a meter bus accessory?