I just did this myself this weekend. I asked my husband to install the pedals (because the pedals on the bike were his) and he said, no i'll teach you!

it is odd because the right pedal screws on the right way but the left pedal is backwards.. he had a tube of grease (it was raspberry colored) and i had to put a tiny bead of it on each screw.

I was fortunate enough to be able to copy what my son did with the powergrips on my tandem to copy the same thing. (make sure all screws are tight !)

I am absolutely sold on them on my tandem bike (i'm the stoker) but am still not sure about the single bike; I am not getting into them as quickly as i'd like.