The shift lever on our BN2 is a little sloppy due to the nylon/brass bushing on the end of the shift lever. Since my carpeting on the tunnel is glued down very well I would like to change the bushing from the top. Are there any tricks to doing this through the top? I noticed in the parts book there are spacers and gaskets under the top plate, can they be reused if they are not torn? Any difference between the nylon or brass bushings?