R12 Individual working hours rounded to two decimals in PERWSHRG

Hi,

In the HR Person Assignments form the individual hours are calculated when entering the part-time percentage.

Unfortunately the rounding factor in the form is two, where we actually need it to be 4 decimals.
The hr_soft_coding_keyflex table however, is able to store a 4 decimal number, but when updating the db column value the form will change back the value to two decimals on the first next update.

The rounding factor causes a slight difference in our salary payment.

Right now I consider adding a Dynamic Trigger in HR which recalculates the individual working hours after each assignmet update. Not sure if this is the right way, should we customize the form?