Capacitor values now follow the "percentage/tolerance" values as have resistors followed for decades. Instead of 0.005 mfd the "new" value is 0.0047 mfd. Considering that the "olde tyme" tolerances were MUCH "looser" than the modern tolerances the "new" value capacitors will work fine.
The only thing is where tuned circuits are concerned and then the value of the capacitor is more critical. However, the values used in most tuned circuits are such that there are still "modern" values close enough.
I really appreciate all your comments, thank you. I've seen the .0047 mfd caps at a local electronics supply store but wasn't sure about using them, in spite of the minute difference in capacitance. I'll use those.