I have a bad vibration while idling at stops halfway there. I get to work and ask my boss about it and he said it is fouled spark plugs which i know isnt the case because i just changed them 2 months ago. I get under it and feel the harmonic balancer low and behold the rubber ring inside it is bad and the outer piece had slid back on the balancer. I pushed it up as far as i could back towards the front of the truck and will pick a new balancer up on the way home. Do you guys think it will make it there?