Just changed out my lens with one that isn't fogged. It takes alot of patience.:bang head: First u got to pry that little lip up on the back. It takes alittle at a time going all the way around till it is straight up.:damn angry: Then twisting prying alittle and pulling. Putting it back on just use small hammer to bennd lip back over while appling pdown pressure and finish up with a punch to flatten it back out and get a good seal.:eusa_dance: used a pair of flat duck bill pliers to bend the lip out.