Alright, I did a search and really didn't find anything other than something about gear facing which I really didn't understand...This is my second XR650L and I do remember the first one making a fair amount of tranny noise even with only a 2K miles on it. However, I do not recall it making growling noise at low speed under lug in 2nd gear like this one.. Only in second gear and only while lugging it. Higher RPM.. Not a problem.. No skipping, jumping or erratic behavior just a lot of noise... If it was doing it in all gears.. I would say a bearing but only in 2nd gear . If someone else has this problem and it is just the nature of the beast let me know.. If the worst case scenario is that I will eventually lose 2nd gear (could be anytime).. than I will keep riding it until then. Some of you folks with older 650L's let me know.. I would just assume live with the noise but if it is a cheap fix.. than I will reconsider.. Who needs second anyway??