You do not need a new strip.
From your photos, it looks like the tack strip is slightly bent upwards where two of the sections butt together. A simple solution: add some sealer to fill the gap between strip and body. More complicated solution: dig out the sealer that appears to be filling the groove in the tack strip, flatten the metal strip down, retack and reseal the groove. Originally there was a rubber strip inserted in the groove to seal it, but from the photo, yours seems to filled with a sealer of some sort.