I changed the oil in the GS today. Well when I say changed I really mean replaced that which was missing and thoroughly diluted what remained of the rest. It don't half go fast round corners now, why is this? I think it might be a noise associated thing cos I can ride it without earplugs now and it don't hurt as much. I think it is the extra energy being diverted to the wheels instead of making very loud grinding screeching noises.