OK, first off, I'd say go ahead and commit the "...3_19" that works.
That being done, I"m not exactly sure what you mean when you're talking about the "rhythm" part of the other one - Are you referring to the short, repetitive electronic synth noise (that starts right away before the guitars come in, and continues through most of the track), or parts of the guitar tracks? The former (the synth) is very easy to fix, if its the latter I'd need to know more specifically which guitar parts (the starting melody guitar lead, the double-leads, the other part that used to be where the deep, throaty riff was, etc.)