I just followed the instructions provided by Roger Brown and his advise on loosening the steering shaft at the rag joint plus the transmission linkage beforehand. Also just loosen the upper clamp that holds the splined end of the steering shaft at the same time.
Reason for loosening, or in my case removing the nuts at the joint to start with is that, once you lift the body off the frame it'll cause separation of the steering shaft from the rubber rag joint. Provided you've already inserted the BL pucks on both sides, you can then just just insert the steering spacer in between.
There are 2 14mm nuts(if i'm not mistaken on the size) that you have to remove, one of which is on the opposite side(duh!), all you have to do is rotate the steering wheel to better expose the other one for easier removal.
I also marked the splined end of the steering shaft inline with the upper clamp beforehand, just for reference, just making sure nothing moved out of place when I rotated the steering wheel...
Pay attention to the orientation of the steering spacer with the side having the larger hole facing down...only one way for it to fit anyway.
Not hard to do at all, just take your time.