"How little we knew! When the new MXers arrived, we loved our first rides—the grunt, the sound, the revs. But then came the day when someone (was it Dad, or was it Junior?) didn't get the valve clearance exactly right or the adjusters tight or something. Anyway, the way the dealer told it, the valve was hitting the seat pretty hard. Then, a valve seat ring must have come loose. After a while, it got kicked up on the edge of its counterbore and held the valve open. And then the piston beat on it pretty good, wrecking the piston, rod, cylinder, head, valves, cam—well, it wrecked everything. The charge at the bottom of the usual 'get running' work order was $3500, give or take a few good lunches.