Thanks all. Another 30 mins. hard worked. No luck. Engatwork, I am even more consfused. You means I need to turn the black rubber cover while I am pulling the tumbler, I have the new tumbler (only the sliver part), there is a black spring, the goal is put the tool into the tunnel to press down the black sping so I can pull the tumbler staight out. If the spring not all the way pressed down, the tumbler could not be pulled out. There is possible the spring not all the way pressed down. But how can I mak sure the spring is all the way down???

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89 300 CE