creak from front leaf spring eye

I put a new rear end in the car last weekend along with new springs from ESPO. I'll call them in the morning but I want to see what folks here have to say about it too. Now I have a creaking noise coming from the right front spring eye. I got it to go away with a couple squirts of WD-40 but it came back after 10 miles or so. I notice there's some play between the bracket and the bushing. Is the bolt too tight? Too loose? Am I supposed to have greased the bushing before installing? The springs came with the bushings pressed in, by the way.