Sbp aaf creation for avid

Receiving AAF’s from SBP, once imported into Avid, the storyboard panels have a duration of at least a minute long which is way too long when you have a ton of panels. I have gone back into SBP and the panels are no where near that, they are either a few frames or a few seconds on the timeline. The timeline duration has no affect on the AAF output.
Secondly, we use the record audio feature when adding scratch and the files are recorded as stereo files, is there a way that these can be mono?