I've have a play around and this bass does not seem to have a walking bass variation. In the notes for this Realtrack (#2126), it says the following...
Bass, Acoustic, Jazz Half,Half Sw 110
Acoutic Bass RealTrack with only half notes playing throughout.
There are some eighth notes played before the half notes on occasion.
The acoustic bass has a classic warm sound.
Tempo Range: 95 - 140 bpm
Realtrack 2125 will do the job for you so if you replace the current bass (#2126) you have with #2125 and regenerate the song, you will get what you want. RT2125 is part of the same family of sounds as RT2126.
Bass, Acoustic, Jazz Half,Quarter Sw 110
Warm acoustic bass playing in a medium slow swing style consisting of an A and B substyles.
The A section has mainly half notes with some eighth note pickups played before beat 1 or 3.
The B section plays a walking bass part for a busier sound.
Tempo Range: 95 - 140 bpm
Thanks Noel I'll give that RealTrack a shot.
In the meantime I thought of another solution.
I hadn't thought of doing the Ctrl-F8 trick on the Vibes for the problem bars.
I messed around with that a bit and found a few 'less choppy' vibe parts.
So I can always fall back on this solution if all else fails.

OK so I just tried out 2125 and yes it does walk, but prematurely!
I have a repeat section where it isn't supposed to walk except for the special bars we worked on (Ctrl-F8).
It's walking the entire repeat!
So I'll just bite the bullet and use the version where I Ctrl-F8 for the Vibes.
