ReportSmith 2.5 Time Summation

Has anyone else had a problem with RS 2.5 summation on a time field?  While
properly displaying the field to be summarized as a type Time/Date, when
attempting to summarize the fields, the result is always in numeric format and
incorrect.  Is this because RS does not consider Time worthy of calculating?

I am creating a report that needs to add and display elapsed time in different
subgroups (ie. car racing or a phone bill) and would like to use the power of
RS for the final product.

To quote Johnny5 "need more input".

        George E Murray