i'm a local racer in az and i've had my yfz for about a month and every time I ride it hard or race it. It starts cutting out everywhere. is this happening to anyone else ?, and does any one have any suggestions? I broke it in properly and its bone stock except for I took the airbox lid off, the baffle out of the silencer, and chaged the jetting. also i've been changing the oil regularly and ive changed the oil filter twice.