I have been toning kallitypes as follows:

A solution of 20 drops of sodium chloropallidite plus 5 gms citric acid in 1 liter distilled H2O. After about 7 minutes of toning there is a distinct tonal change, but there is also a bleaching of highlights and overall increase in contrast. Is the solution to this problem to overexpose the print or reduce/eliminate the citric acid in the toner.