Please do it, I wouldn't have a situation I do now if this information had been available a few weeks ago. I just finished a complete restoration on a 1971 Raleigh International 23.5 inch frame (one obviously stripped for the components) and the bottom bracket was the greatest challenge. Had I not opted for a smaller inside chainring (42 tooth rather than the original 45 tooth) the inside chainring would be rubbing the rapid taper chainstay. I have precious little clearance, and could have used another millimeter of spindle length, but happily, everything works beautifully.