Welcome to ECF!It's not really a big problem. When that happens your
mod thinks theres a higher resistance build on your atty and it raises the wattage up (see ohms law). Mine does that occasionally, especially if your post screws are loose. You definitely know when it's doing that though because your atty will be a lot louder than it normally is. Just make sure your atty is screwed all the way down and your post screws are tight.