Got a lot done over the weekend. I ended up using Nu T link belting as I couldnt find a belt length in the right size for me!
I also added another front engine brace on the left hand side, built up the clutch using motorbike springs, which are lighter and give a much better lever action and no slippage. The rear chain has been installer and the rear brake caliper mount and chain tensioning thingys installed. The new throttle cable and idle/throttle cable adjuster has been installed along with the clutch cable.
I also worked on the left hand brake lever mount, I started with 5mm plate, and drilled a 15mm hole and used the end of a wheel spindle which has the OD of the brake pedal. I then welded around the bolt on both sides and then welded the plate onto the frame. I then drilled and tapped a whole in the middle of the bolt. I will bend the brake lever so that it clears the foot peg and then screw a bolt with a washer on to the end to keep it in place. (I also need to sort out the caliper mounts, which I think I will just nick from the other side. )
A nice video of the belt drive, and some pictures: