I purchased a Tiger youth bow for my son last year for Christmas and I have noticed that the riser is starting to twist. It has gotten so bad that the string comes off after shooting 3-4 times. I noticed in a few other posts that I'm not the only person that has experienced this problem. This is my Third Matin bow ( Firecat, Saber) and have never had a problem with one of their products before. This bow has not been abused and looks brand new. Hopefully Martin has a fix for this problem.