help with VirtualWire and 8mhz + 16mhz

Hi,

I am trying to use virtual wire to communicate between an arduino uno at 16mhz and an arduino mini pro at 8mhz. I understand virtual wire is very sensitive to timing and I think I am having an issue with the different clock rates. Could someone point me in the right direction in how to modify the code to work in my situation? I am using the sample code and similar hardware to this VirtualWire Library, for very cheap wireless communication

Thanks!

Did you choose the different board types while compiling? This is essential because the timer settings are calculated at compile time.