i know how to change blades but these are giving me the flucks!!! LOL!!! Is there a special tool or something?

I know exactly how you feel! ;O) Had the problem changing the rear viper. I drilled out the rivets (?), but couldn't find a standard viperblade to fit on the socket, that now would have to be fastened with 2 small screws... A Bosch Twin 450 with adapter can be forced on the viper arm, but the fit isn't very good... Wish I had let Toyota do it for me from the start, it's a stupid system!