However the STTF are barsdards. They managed to edit a sound tape for a court case for one of my mates, so he lost his licence. Then they saw him a month or so later and asked him how he was in a very smart arse manner (as he didnt have his licence at the time).
Basically, they will remember you. Dont be smart, play REALLY dumb, talk slowly and clearly and think about what they have said before answering so you dont fall in to their traps.
And end of the day, as much as you can have the whole defect book, they will find something somehow. Even if "water in washer bottle is TOO LOW" not empty, but too low.
Id cop stuff from them on the chin from them and take it to court or DOT.