I have a '94 XR600, mechanically stock, always been strong and reliable, but it seems to be getting more 'snatchy' at lower rpm. I don't think it's a carburetion thing, though it might be. Unlike my XR440 (with Mikuni pumper) which will pull from zero without snatching or balking, the XR600 needs to be in its midrange to pull smoothly. I wondered if maybe the camchain is getting old. Could this cause that symptom? It kinda has that feel, like on old Brit machines with separate gearboxes that would get 'snatchy' if the primary chain wasn't kept adjusted. Or maybe it's always been this way and I'm only now noticing it compared to my XR440 which is such a tractor. I would have thought the XR600 would have been the torque-meister, but the 440 is much smoother and stronger at low revs. Is it just that the XR600 is all mid-range, and they all do that, or does my bike need work? Any help appreciated!