I have a 2015 Scag Tiger Cat, was doing lubrication PM's and when I greased the deck spindles I greased until grease was coming out the opposite side the spindle of the zerk. Is this normal or did I blow the seal? I assumed it was the overfill release valve, because the grease always came out the opposite side the zerk was on...any help appreciated. Also, how often you guys grease your scags?