Bear with me as this is my first shock installation. I jacked up the front left, removed the tire and front left shock. Installed the new Bilstein shock F4-BE5-6081-HO - this should be correct for 2003 Dmax 2WD. Got the bottom torqued down. I start tightening down the top nut and got it down to where the top bushing is bulging a little but the lower bushing below the frame is loose - why? I notice on the old shocks there was some type of spacer between the upper and lower bushing am I supposed to reuse this?? Totally lost now and I thought this was going to be easy - Thanks for any help you all can provide.