In the first multivehicle accident, the beige Riveria has a dent behind the driver's door before it hits blue car indicating that a previously wrecked car was used. The clutch and brake pedals shown on the blue American Motors car are from a Volkswagen. The hole in the windshield on the Dodge is much smaller when it comes to rest on it's top than when it was first shot. Two pumps on the pellet gun may not have produced enough energy for a pellet to break a windshield.
When the boy leaves his can of pellets behind, the can of pellets is to the left of the lid. When Ponch and John find the can, it is to the right of the lid.
When the Plymouth Barracuda jumps the Plymouth Duster during the GTO vs CHP chase scene, the passenger side headlight on the Barracuda is broken before lmpact.
At 8 minutes Jon picks up the tin of pellets with his bare hands, thus disturbing the perp's fingerprints on the only evidence found at the scene.