[Uncle Bulgaria]

Is it the part that is causing the noise? I would clean the rubber and see what happens. It looks to me like the part pictured is bent as it should be, which allowed the factory to take up differences in manufacturing between units. If you think the noise is coming from the flywheel it likely is.

There's a lot of information on here from people who have used various means to resurface rubber wheels in these situations. If it's entirely shot, it may be possible to replace the rubber, or get a new part from some of the German outfits that still have spares. Someone was on here recently mentioning they had bought a large array of Uher spares, too...