Yesterday I changed to the silent block, did my first run today. The difference is absolutely remarkable. But it was not easy to get the old stuff out. I tried it with a vice and a 32' nut. First the inner stuff came out. The I used a Dremel to cut some slots into the ring. Finally it lost, because i found a perfect fitting piece of metall with 22 diameter to press the outer ring out. After cleaning the bearing seat with abrasive paper I mounted the new silent block, first with a hammer, the using the vice again. Took a while, but it was worth it.
And hey, I got one silent block left. If someone needs it, I would ship it. Just send me a PM.