Thanks a lot for the feedback, very much appreciated! I now understand the gluing part... makes sense
I will try these hands on tips and trust my ears (who needs to rest for a couple of days first... ;-). The lowpass on hats and cymbals was interesting, I have never tried that (intentionally anyway). I guess the idea with that is primarily to leave room for vocals in the upper spectrum?
Regarding spec analyser, I just saw that such will be included in the Reason 7. No point to buy the RE then...