Tannery said that the head on a 12' I have to mount slipped. I've never mounted a gator and I'm hoping this is common repair. Just in case, would like to see if there are any repro heads that would work on a swimming pose ( partially open mouth). Paid for hands on seminar to take it to, and it is 12 day away so need to get things ordered. OutdoorHub Mobile, the information engine of the outdoors.