Howdy, my 2006 LJ Rubi has developed a kinda light heat sheild sounding rattle at 2000rpms and gone by 2100rpm in all gears. I have heard it may be a cracked flex plate starting around the holes and will get worse, before I go removing my Under Armor and tranny, would like to know if anyone has has this problem. My LJ only has 22k miles on it. I have pulled the inspection plate and checked converter bolt torque and they were fine. Any ideas would be great.