I have a strange whistling/whinning noise coming from the front of the engine near the bottom of the radiator. it's not a wind noise, it's either the clutch or trannie maybe? It does it somewhat at idle but more so going through the gears. especially in fourth gear. it almost goes away in top gear. two suzuki dealers say they hear it but cannot fix it. I had another 109 that did the same thing but not nearly as loud. It's very annoying. So much so that I will sell the bike if I cannot fix it. Any help would be appreciated. By the way it is much quieter with the clutch lever pulled in. ??????