little bit screetchy

[dan_kitty]

hi, ran the car for the first time this weekend set up as per manual with nothing tweeked. Not sure how the car is supposed to sound but it does sound a bit screetchy until it reaches speed (completly smooth down the straight). Pinion mesh seems fine, although i havent tried a different gear yet.
any suggestions? or is this normal, slipper or diff settings perhaps

apart from that the car is wicked and am very pleased with it

ta
dan