I'am from Canada and have been racing off-road for 10 years and this was my first 4-stroke. I loved the bike it rocked and nobody could touch me on the big hill climbs. I have one big problem, my dealer doesn't know what they are doing. I had them adjust the valves and I took it for sa ride the next day and it blew up and they said they are not at fault.........? It broke two intake valves and one exhaust
valves. Now it needs a top end and I'am forced to sell it or part it out because this is the second time the top end has been apart. The first time the timing chain jumped and destroyed it, of course I was 8km from the finish line
in 8th out of 58 riders in a 80km cross-country race. Talk about burned, so needless to say I'am pretty spooked about four strokes right now and was going to buy a wr450f and it is lookin like a yz250. Should I part it out or sell as is.......??????