Loop volume seems to decrease over time

[chiefbucknell]

I'm using Augustus with GarageBand, and I think i have the looper enabled right, but it seems like my loop's volume decreases over time. Well, to be more accurate, the earlier added portions of the loop seem to fade out, while newer sounds introduced to the loop remain louder. How do I keep this from happening? (I think I may have solved this by turning Feedback up all the way?)

[os]

Yes, if you want the loop to not fade out, you need the feedback at 100%.