Basically, I want to know if I'm in over my head. I haven't ordered the bits and peices yet, since I want to pull it apart and see what I need. I'm new to four stroke mechanics (I know the basics) so give some leeway on misnamed parts. I pulled off the (valve cover?) to expose the valve train. I see the rocker arms (yea?) valves, valve springs, cam, cam chain. The chain I think needs replacing, I can wiggle it around and pull it upwards slightly from the (cam gear?). How much further do I have to delve into this to replace the chain, and do I need to replace the tensioner? One other question, if I pull this next layer off, are the valve springs going to like, pop out, thus requiring me to buy a valve spring compressor? I know, a lot of questions, but help me through!