I am trying to decide on whether to attempt changing my timing chain on my own or look at different options, but today I ran across someone and they mentioned a tool that will lock the cams in place while you work on it. I have searched all over and have found this camshaft timing lock tool for bmw Volvo volkswagen but the only thing I can find for my g35 is a universal tool from China. So my question is, has anyone else ever heard of or seen this tool? I think if I had it I would be ok changing the chain because after getting it to TDC I could just lock it in place.