sounds like you have the exact problem that i had...
if it's just about laying the different patterns down like you do it with the redrum ?!? i also tried to lay the synth patterns down (A1, A2, ...) by choosing the synth in the sequencer but since you use the matrix sequencer to create the synth patterns you just have to choose the matrix sequencer track (in the box on the left in the sequencer where you have the different sequencer tracks...mixer, redrum, synth etc.) instead.
sorry for this kind of crappy description but i'm also new to using reason so i'm not really aware of the terms to use...i really hope though this may helped you a little...