Has any of you guys got any tips for checking the oil level on my 07 wr 450? I start the bike, let it idle for a few minutes then check the dipstick. Then un tighten the 8mm hexagon drain bolt to drain the oil. Once the oil is drained is this the required level? I am having problems with the dipstick check because the oil is new and i can not see the level properly. Also the there is not much differnce between overfill and the correct level, with the dipstick being so small. Any tips would be much apprecirated.