i think u mean flex lines only right... no need to replace steel lines right?Replace the lines and calipers. Problem solved. Very common.
i had the same issue tho just recently. its been almost a month now since i swapped out the calipers, pads, rotors and flex lines on both front. bled fronts out. havn't had any issues as of yet. actually they felt wierd at first like it was late braking and whatnot but now the pads seem to have settled. smooth now.
i agree with boomfist tho... they don't feel the same as other trucks/cars still tho. there's always been some kind of loosness alittle. we'll see. my 01 club cab i had was great tho after the brakes were done. hard to say.