Thank you again Rickster, your setup sounds more intracate. Good luck!
I'm opting for simplicity, the track assembly will be solid with one adjustable wheel for tentioning, but all suspention will be left to the A-arm.
I'm a little confused on your torque bar arrangment, but then again somethings are better explained by a pic.
Milling a hex into the drive wheel is optimal, though not having any way to do this, I think I'll notch the back of the drive wheel for the axle pin and secure the drive wheel with a bolt through design as LST2 axles are machined for a set screw inside to hold the axle pin.
I verymuch apreciate your input and look forward to following your progress.