What you'll need:
1. Fork to be "raced"
2. Length of pvc longer then the fork tube and a little smaller diamater then the race (mines about 4 feet long)
3. Fork race (obviously)
4. Some muscles
Step 1: Place race upon fork tube like so, along with pvc. In that order.
Step 2: Stand fork/race/pvc up so legs of fork on on the ground.
Step 3: Slam pvc down onto fork to force the race over the lip of the fork "crown".
Step 4: Repeat step 3 untill race is completly flat agains fork legs.
And Wahlah. A fork with race ready to be put on your scooter and ridden.