im not sure if i was supposed to grease my blocks b4 i put thm on...but everytime i hit the littlest hole or bump my front squeaks... someone told me thats wat i shood have done but i didnt find that in the instrucktions...but if i am supposed to, then do i have to take the blocks off to grease them or is there somethind that i can put on there to save the time and trouble???