check that you have the right arm, pivot and shaft combo'. If you have a true sp then the rear shafts should be silver and the arms should be short same as original RB5. With those black cvd's you should have mid-arms la243/um521 both should run with the narrow blocks and not the wide ones and both with the offset hubs not the original zx5 hubs. One last thing, the cvd shims should all be on the inside of the axle so that the shaft is pushed further in to the drive cup.
HTH Simon.
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