I recently got a new dehydrator and jerky gun. I am having trouble with the after taste being to irony. This is the first time I've been experimenting with a jerky gun. I used to just hand slice the meat and then marinate it then dehydrate. I don't know what I'm doing wrong now that I'm using a jerky gun. It has good texture and taste good at first then the iron tastes kicks in. Any help would be much appreciated