Need to change the number plate plastic on my 2013 450 SXF. The air boot seems to be flanged on both sides (not just the air filter side). So do you just try to push the flange on the air filter side through the plastic as you remove it and then push it through the new plastic as you install? Can't see having to remove the entire air boot and everything connected to it to remove the plastic. But since you have to remove so much other stuff maybe you do. The flange seems pretty flexible but did not want to mangle it so asking for advice. Any help is very much appreciated.