Well, ripped the whole thing out and started again with cast-on. I had really misread the instructions and it was a MESS, but, now the whole thing is going well and am excited about th eventual outcome. I also realised that, having used the "x-large" instructions, the thing would have been more appropriate for a baby elephant, so, this works on several levels.
Back to weaving at some point, but, I am getting a tad "OCD" about this project.
Craftspersons will understand.