Just bought an 02 GTX 155 NA with a broken cam chain. Valves appear to be OK, no fluid leaks past them anywhere. 3 broken rockers though. What all do I need to fix this as far as parts? Been searching and reading posts, and it sounds like the motor has to be split to fix it? BTW, done lots of 2 smokes, this is my first 4-tec rebuild so I guess you can call me a noob on this.