You know, the yz490 seems to be just a spark problem for him. I have to admit, I've never seen anything so funny, I about fell off the bike myself! Picture this, dad is towing son, dad is frustrated that the rope gets stuck in the rear tire, dad says tie it around my waist (you can see where this is going), dad says move em out and son follows oh so gingerly, both take a little downhill then uphill, son forgets to keep tension on the rope and suddenly comes to a stop halfway up the hill, are you with me? Dad gives gas to make the hill not seeing son stopeed dead, rope tightens, dad is ripped off bike like a calf in a rodeo! Elk laughs his butt off (under the helmet of course)!!! It was a sight to be seen, words really can't describe it.
Oh well, we did have a great time and I look forward to Arrowhead, I hope.
Cya