WR250R Cam Chain help needed

[simonpig]

Whats up wrenching gods. I'm stuck. Heres the situation:

After 20,000 miles, my WRR engine starting feeling loose. Seems like the Cam chain has developed some stretching, so I decide to order a new cam chain and am in the process of replacing it.

Several mistakes were made in the order of operations:
1. I remove the tensioner before spinning the crank to TDC mark on the flywheel. After several cranks, its seems like the valves stopped at their natural TDC position—as chain starts skipping on the cam gears, not sure?



2. Second question is, How the hell do I remove the cam chain? Do I have to actually split the case? Or is there a chain breaker tool, master link setup, I'm missing? Its a continuous chain.