It is poosible to have both working. I will explain once i find an easy way of writing it. he memory simms in the keyboard slots with the vocal processor are just for buffer memory. they do nothing else. You are right in saying they need to be there. However if 32mb of simms are installed then the buffer is still there as it uses these simms. The reason you having difficulties is all down to the jumper configuration. I will dig my service manual out and tell you exactly what needs to be where. If you go to the general page and click system info you will see descriptive of what you have ie voaltile sample ram/backed sample ram/v processor present. this tells you whats in there and whats working by denoting present by it.
i will try to look today with the answer. i have a WK8 here and everything works with 32mb of ram installed
Dazza