The whole process sounds more complex and touch and go in description than it actually is, I've set the necks on both my 4001 and the 4005 no sweat and at first attempt (following Ilan's instructions in another, older thread, danke!). The good thing is that there is not much movement on those old Ric necks once you have set them up, unlikely that you would have to do it again unless under extreme conditions.
Opposed to that, my 4003S/8 with the new truss rod system has given me huge and repeated issues. I dread setting that up.