Timing is easy man, buy a cheap timing gun.

Reset the dizzy.

- Take out the dizzy and take off your oil cap.
- Grab a spanner and rotate the crank clockwise until the timing notch on the crank pulley lines up with 0 on the cover.
- Look down the oil filler hole and try and look for a dimple on the intake cam, if you can't see it rotate the crank all the way around to 0 again and you should see it. This is call Top Dead Centre (TDC)
- Grab the dizzy and having it facing up in your hand and rotate the shaft until the dimple on the shaft lines up with the dimple on the dizzy near the o-ring
- Now both the motor and dizzy are at TDC
- Carefully put the dizzy back into the head trying not to rotate the shaft as the cam and dizzy gears meet. I find the dizzy should go in so that the two bolts holes are roughly in the centre of the dizzy brackets.

Obviously you can't time the motor with out it running but if you do this while the motor is out it will be a lot easy than doing it in the engine bay.