Ok, so I was adjusting the valves on my 2009 yz450f and I accidentally torqued the exhaust cam cap on unevenly, causing it to crack. Thank god I noticed before I ran the engine. Well I've been looking everywhere for one, and I can't find one for my model year. My question is are cam caps from other years interchangabe? Also are yfz450 cam caps interchangeable? I'm thinking that as long as exhaust cam is the same then they should be interchangable? I'd also be interested in buying a cam cap if you've got one, so let me know. Thanks a lot guys.