DAMN grant wheel install!

[67cst]

howdy partners...im in the middle of installing my woodgrain grant wheel on my van tilt in the 67, and im getting hung up on the horn plunger, it says to discard the old one so i did now the brass piece that makes contact isnt long enough it seems....and i need the white plastic bushing in there so it keeps it off the metal sleeve it slides in..so what gives? who here has done this before? i dont want to just slap the wheel on, it would be nice to have a horn too...also my install kit didnt have a spacer..it shows that as the first thing that slides onto the splined shaft...maybe the instructions are universal or something i dont know...but do i need that spacer to begin with and also how do i get my brass plunger to make contact with the piece below it? any pointers would be great, thanks guys

Derek