RTOS/TI-RTOS: Adjusting Phase of Periodic Clock

Part Number:TI-RTOS

Tool/software:TI-RTOS

Dear TI Timer Support,

I have a periodic clock timer helping me synchronize a task to an outside periodic event and I'm looking for a good way to give the timer a nudge 1 tick up or down to change its phase and account for the drift between clocks - essentially I want to just modify the period of the timer occasionally for just one period to adjust it's phase with the outside event.    Seems like I should be able to just increment some counter in the ClockStruct but not sure which one or if this is the best approach?  Any help you can give me is greatly appreciated.

Thanks,

Brett