Control 2 stepper drivers 6036-E card?

I have 2 third party stepper drivers that take Step/Direction/Enable inputs.
Enable is low-active and I am not using it.
I want to control both motors from my 6036-E card and SCB-68, but do not need to control both at the same time.
The standard example code for pulse train generation running in parallel with standard example code for DIO line control does the trick for an individual stepper driver.
The problem is when I try to do both. I recognize that one pulse generator uses both counters, so I need to "release" the resources of the first pulse train generator before I attempt to control the second driver. I configure ctr/0 and DIO/Line0 for stepper 0, and ctr/1 and DI)/Line1 for stepper 1.
I have been attempting to use event structures to perform the task in the "blind" hope that the event structure will fully process the first event and close the task before processing the next event.
Can anyone take a look at the attached VI and tell me what I am doing wrong, or point me the proper direction?
Thank You,
Barry
Attachments:
XY Stage Manual Control.vi ‏95 KB

Attached find a .VI that will provide Step and Dir outputs for X-Y movement using a multifunction DAQ card. Written in Labview 8.2. Only one axis can move at a time becuase the vi's used for the step output uses both of the board's counters in order to function.
Barry
Attachments:
XY Stage Manual Control2.vi ‏106 KB

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