I am about to tune in my suspension on a 2012 D675R. I still have the original Öhlins stock springs on the schock and in the front. Which weight ratio is the stock springs...?? I am about 88 kg with all my gear on - approx 14 stone. Do i need new springs....?? I know i can check it by testing the static / dynamic sag, but it is nice with some advice.......and it will save me some time......