I just re-assembled my fuel rail last night. The injectors slotted into the rail without any problems. My only concern was that they seemed a little loose.
Basically, once the injectors slot into their little hole in the rail (side-feed), there's a strip of metal that bolts down on top of the row of injectors, to kinda sandwich them into the fuel rail. Even when this strip is fully tightened, there's still room for about 2mm movement up and down by the injectors. Is this normal or a bad thing?