Hey, I just bought the bike a couple weeks ago and had a buddy test it up in the city. He got it up to probabaly 30 mph and it didnt smoke or have any performance problems. It idles nice and performs like it should at all speeds. I got it on the road and was told that it was burning oil as I was driving up to 50 mph. I drove it around my yard a million times getting it up to 20 miles and it didnt smoke at all, just at higher speeds. Any idea what might be causing this?