it is simple Nick
if I can do it, and from a phone camera as well, what with me being more handy with 48" stilson or 45 oxy/acet nozzle, then so can you, its been said that the way I do it is no longer appropriate, but I am still doing it, and the complaints have stopped, takes 2 minutes max.
and....I still thank Simon (Deal) for the help in learning how to do it, as with anything if you are being instructed and YOU WANT to learn, then paying attention is the key, with computers I find a serious problem when I ask someone to aid me, in that they want to show me how good they are at it, and do it for me, rather than INSTRUCT me on it. That was not so with Simon.
Paul in Cayman, be sure that your welded assembly fits over the crank before you permanently attach the two together, and then get the open socket end turned to be square (less burrs) as the "lead in" will give you problems if you don't.
CLEM