I recently did the same repair.  I decided to put clamps on every
injector and leave the cups off.  It seemed to me that the "barb" like
structure of the male portion of the hook-up would hold the hose just
fine, but why risk it?  All in all, a much easier chore than I expected.
John Jensen, Mudbug Pottery
mudbug@toadhouse.com , http://www.toadhouse.com

-----Original Message-----
For those who have replaced their fuels lines and specifically the short
lines between the injector and the fuel rail here's a question.  What is
the OD than the factory hose that was on there.  As a result, this new
hose does not fit snugly inside the base of the washer.  If that washer
is supposed to make a difference it won't have any effect with this
hose.  I'm thinking of using some clamps to be sure and safe.