It may be better to reset the Rate according to a WT that will always hold the correct Rate at that point in the schema, as you may sometimes have only one split or many splits.
Look in the Input Table before or after the Rate of WTs 8050, 8060 and 8061 gets doubled (and you may also want to look at the Rate of WT 9105), and look if you can find a Technical WT (such as /001) that holds the Rate. You can transfer that Rate into a temporary variable (in a pcr processing WT /001 and using operations ZERO=&RTE1 ADDWT&RTE1). Then, you'll be able to use that temporary variable to reset the Rate of the WTs after the point where they "double-up" (using operation RTE=& RTE1).
Note that if there can be more than one Rate in a Payroll Period, then you may need to query the split and create more than one temporary variables, such as RTE1, RTE2, RE3, etc...