'Zing' of 'ring' from second gear

[westcoast]

Hi guys,

I've just had my first day of driving with the '2 and loved it.  s:D s:D
It's a 2003 6 spd with 70.000 Km (40-50.000) miles.
I will update my introduction post soon.

I did notice a slight 'ring',(ratlle) or 'zinging' noise when I do engine braking in 2nd gear. Actually it's a too high of a frequency to call it a rattle.
It's not really loud but it's the only gear that makes this noise.

I just wanted to know if this is normal or if I should be worried?

Thanks!

Greetings

Dom