Wiper blade is part of the Toner cartridge. If you have just purchase this toner, bring it back and ask for another one or money back. If you have it for a while, buy a new toner cartridge. Please go ahead and spend a little bit more money to buy a HP OEM toner.
It is very difficult to rebuild the cartridge right. THat is why Moe stretches it again and again that the chance of getting a good reman'd one is not that good. Please listen to him.