[musicalavtech]

After you get it sounding good on the first mono track, click 'auto' on the plug-in window, assign parameters you may wish to control, then you can option-drag a tweaked plug-in to the second track and it will retain the same edits, tweaks and parameter assignments. Then you can group the two tracks together so when you adjust parameters in one, (in the track edit parameter view, not the plug-in window) it affects the other in real-time. Or you can use a real-time controller assigned/linked to parameters of both plug-ins for on-the-fly edits.