F1 2012 G27 buttons

[Edward Gayle]

Hi there everyone and forgive me if im posting in the wrong section.
I have the G27 wheel and playseat...my problem is the 6 red buttons on the wheel,they dont work properly any ideas plz
I had the buttons set up for KERS and DRS but they dont seem to work.I use the buttons on the shifter instead for these functions.
Even when i try my paddles they only work sometimes.
Do i need to calibrate this G27 or something,.i just dont understand why they work sometimes and then not at all.
Or do i have a faulty unit ???????
Thanks for any replies