A much easier way of doing this in my opinion is to create a mixer, then connect each of the redrum's channels (excluding the master outs) on a channel in the mixer. Then right click the mixer and create a reverb unit so it connects to the mixer's bus. That way you can selectively choose multiple drums to only have reverb or whatever effect you desire.
I know I didn't do a good job of explaining it so here's a .rns template I created:
http://www.fileden.com/getfile.php?f...20Template.rns
(in the rns template I also created an other mixer and chained it to the drum one for all my instruments)