I have a harris headstock stand that I used on my gixer track bike which has been replaced by a 2018 v4 panigale. I called harris on Tuesday to ask if it could be used on the new bike. He said I needed a new bracket to change the angle and a 28.8mm pin. Now for some reason I thought it was 27mm. He was adamant it was 28.8. It arrived today and does not fit. Anyone got one they can check the size please