Dont worry about it mate.
I was pissed of with the nissans too.They seem to be all over the track and to me i thought it was dangerous but no doubt they will be pro drivers.I was out on track but couldnt go over 5k revs cause my fueling was way to lean.
I love track day but its upset my car My tyres are worn my pas rack is pissing out and i think my engine oil leak has got a bit worse than it was.
Lovely car by the way the only thing i dont like about this shape focus is that dull boring horrible triange bit of plastic infront of the front doors.