Yes if the leaf seperators are perished or missing then the spring has free play. The spring has one bolt/stud in the centre to set them longitudinaly, the bottom spring (longest) is held by the long bolt at the trailing arm, make sure to brush the crap off the threads, count the free threads to ensure the same position upon replacement. Some recommend replacing this bolt, make sure if you do - to get the same length bolt. The centre of spring is held square by a Plate, two side Spacer plates, four bolts and the Diff carrier Assy. For some reason the 4 bolts each have a spring washer and ONLY the front two have a Flat Washer as well - don't ask I don't know Y. The large bolt on the end of the spring did come in three lengths to set different heights for diff factory options. Parts were avial from Chev Parts at Yenora (call Ian) or I'm sure Ponti World would also have them - they charge $11 delivery into Syd metro from memory. Hope this helps - I 'm at Cecil Hills and have a build book with exploded diagrams -but no torque info.