No position has been more volatile over the past couple of years for the San Francisco 49ers than wide receiver. AdvertisementAdvertisement AdvertisementWith so much change at the position over the last two seasons, there's bound to be plenty of questions. Let's ask just three of those questions today:Can the position group stay healthy? There has been no player on the 49ers whose stock has grown over the first few weeks of training camp like Stribling. It's tough to go a day reading training camp reports without some sort of mention of Stribling's performance.