Hi Rabbit, I changed the rubber strips last year. Only $4 or so and better than old ones. 主要是买来的新刀比车上的刀臂长,可能要切掉一定点儿,不要太多,最终要让新刀装上后有一点突出的样子,刷起来才干净。我去年cut too much, one end has 卡头, 另一端自由滑动,未顶上刀臂挡头,效果不太好。However, it saves a lot. Dealer asked me for $50, even for a new set of blades, costs about at least $20.