Ok, so I took the cylinder heads off (for no good reason it turns out, but that's another story), and I'm putting them back together. I had marked the timing chains and camshaft sprockets, but by the time I had everything back together the marks on the chains apparently got rubbed off. No problem, there's a line drawn across the sprocket which is supposed to line up with the cylinder head wall, so set it to TDC, line that up, put everything back together and it all looks good. So I go to do the front cylinder. When I took that one apart there was no line so I drew one with a marker. But after taking it apart I found that the front sprocket did have a line etched in it, and it's exactly parallel to the one I drew but on the other side (180 degrees away, I mean). So the question is do I use my line or the etched one? Did I maybe forget to set the front cylider to TDC before drawing my line? Or maybe it's like that so in the factory they can put both cylinders together when it's a TDC for the rear? Anyone know, or at least know how I can tell which way it goes by looking at the cams?