Well scusi! I owe Ducati (the brand of the current capacitor) an apology! Certainly the cap had declined to 2.3 microfarads but it is not the reason for less than optimum rise. The RS one in situ results in a 'large' wholemeal loaf with a crown that does not rise above rim of the pan. Perhaps it is a seasonal wheat effect. Or maybe a yeast batch variation - only time will tell.