I am thinking about removing the screens from my trimmers and blowers. I did a search and I saw that alot of you did the same. But my question is, #1 What are they for, #2 will removing them result in any damage to my machines? The reason Im asking is because I removed the screen in an old echo trimmer I had, and about a year later it caught fire. I am not sure it cathing fire had anything to do with the screen, but I have been nervous about removing them ever since. Thanks for the help.