I use Reason almost exclusively live, and never really record anything to the sequencer. However - now that I'm about to start recording, I'm running into some trouble. I basically use a few different Redrums linked with a Combinator, and I use pads to trigger each drum (3 Redrum samples per pad). When I'm playing live I just hit the "Transport" thingy and it plays all of drum machines simultaneously, though when I select the Combinator to record, it will only play one machine at a time. Is there a way to record them live to the sequencer?

It is a little confusing. Do you want to record yourself playing the drums via tha pads or do you want to record any patterns which you've build within the redrums? I'm asking, because you said, you want the redrums to play something while you want to record.