Sorry to hear about your hicup on the PPL skill test.
You may have done this already, but if possible, once you know the date of your test and what aircraft you are flying, why not go out to the aircraft a couple of hours before and make yourself familar with the aircrafts NAV fit. Make sure you know where the radios are, Transponder etc? May help you.
Gook luck with the retest and remember as Delta Wun Wun says, we have all failed something sometime, I remember failing an electronics test at college, dam Electro Magnetic Induction!!
