MJR,
Glad I'm not the only "arse".
I would suggest you dispense with Series One unless you are confident of a full pass at attempt two.
After I failed I was advised to start a new series which I did. However, the CAA insisted on my doing an additional five hours of training. On my next test I got a partial and a full pass a couple of days later.
My problem was doing my IR training on a part-time basis which didn't help.
Best of luck.