Looks like the same model O&M that I have been using daily since 2004. I didn't touch the insulation in mine - it was fine. My clock has never worked. You can probably find the clock knob on ebay. There are a couple of sellers who list a lot of O&M parts, especially grapevinesally. Unless someone removed it, the ID tag should be mounted to the inside of the storage/service door. All of the painted-on writing on mine is gone, looks like someone used oven cleaner on it. The model number is stamped into the ID tag. Mine is Model 425-1.
Love your jukebox avatar.