we have debated the problems and cures related to the '03 wr450's for sometime now. some have sheared keys over and over. some have had their cranks replaced. we've replaced idler gears. a couple of us have broken side covers when nothing else would give. some of us have removed our e-start stuff all together. nobody had the all the answers. it would seem that yamaha has found something. the 450 atv came out last year with a torque limiter in the starter system. no failures. the '04 wr has come out with a similar set up and it appears that it may fit the '03 with minimal work ( it may need a bushing installed ). it might be the right time to start sending letters to yamaha. if we can get this going in the next week or so we may make some sort of impression on them. now is not the time to tell them the bars suck or you want better tires. we should stay on the starter system. they may throw them all in the trash. who knows, we might even get a straight answer out of them. there is an address in the front of the owners maual for the customer relations department. unless someone else has another address, that is probably where they should go. yamaha motor corportion usa customer relations department po box 6555 cypress, california 90630 if i'm a bit off base here or this is the wrong way to do this, let me know.