Not sure why they substituted the cr233 for cr733.They shouldve gave you the correct reducer.Im not sure how different the 2 reducers are chemically,cr733 is a mid temp reducer 55-70 degrees F.Some paintlines can use the same reducer on both clear and base,but with the crossfire system,they use much different kinds of reducers for the clear and single stage paints.Mixing incapatible paints without knowing the outcome is asking for disaster.I would take back the cr733 and get the correct reducer next time you repaint it.