So I'm replacing all my DL u-joints trouble shooting some weird vibration. While taking out the old Ujoints, this part of the CV. Separated. There is a little spring that goes into the tube at the DL end and the separated part has needle bearings in it (bottom of pic). Please tell me I just grease it, make sure the needle bearings are all in place, and slide it back on. If not what's my options?