When I first got this jacket I thought it was great. It got tested on its first camping trip with me just a few days after I bought it and it kept me completely dry in a pretty good downpour. I walk to work everyday so my jacket got a lot of use the first month. I started noticing that rain would soak in where my pack shoulder straps were and along the back where the pack rubbed up against the jacket. Is this normal wear and tear for most jackets? Can anyone recommend a good rain shell that will stand up to backpack wear?