Good day, I'm brand new to the forum but would like an opinion please. I've been a recreational MTB rider for quite some years and recently upgraded to a Momsen AL829 29'er one month ago. I've barely done 150km on the bike and took it back to the local bike shop where I've bought it from for the first free service / check-up / tuning. Next day got on the bike, cycled about 100m and BANG! my derraileur hanger snapped. Can't remember what exactly happened but I think I shifted a gear at that time. It was a flat road with no rocks or anything else possible to damage it. Who do I blame? The manufacturer? Bad hanger? Or the my bike shop who last worked on it. Do I have anything to fight for regarding warranty? Thanks