I have my factory email app linked to my yahoo account. Has worked perfectly until 2 days before the OS update when it started having problems syncing properly. After update it no longer misses emails (syncs emails in different order but does not miss emails completely) but now it is eating my battery. Overall battery life is down from normal and this app is the top user now at 26% usage instead of the usual less than 5%. Tried a coupole basic things but I cannot figure out how to get it to clear this hiccup. Any help would be appreciated.