ffmpeg conversion 23,976 to 25fps - audiotrack is shorter than the video track

I have a problem with ffmpeg using this code: /Applications/ffmpeg -probesize 50M -analyzeduration 100M -i "$f" -map 0:0 -map 0:1 -c:a pcm_s24le -async 1 -c:v dnxhd -b:v 36000k -r 25 -s 1920x1080 -aspect 16:9 -pix_fmt yuv422p -coder ac -trellis 0 -colorspace bt709 -color_range mpeg -subq 6 -me_range 16 -sc_threshold 40 -keyint_min 25 -g 50 -metadata creation_time=now -af atempo=1/0.95904 -vf setpts="0.95904*PTS,drawtext=fontsize=30:fontfile=/library/fonts/tahoma.ttf: timecode='01:00:00:00': r=25: x=main_w-180: y=30: fontcolor=white@1: box=1: boxcolor=0x00000000@1" -sn -y "/Volumes/videos/$FILENAME.mov

The Problem: The audiotrack is about 109 Samples shorter than the videotrack (the red ones). Here is a screenshot: red=ffmpeg, green=Adobe Premiere The video which is converted with Adobe Premiere has the exact same lenght (the green ones)

How can I fix this? Thank you very much! Jack