I'm no expert, nor am I a certified technician, but I'd be more than happy to help you. It's a lot of fun tearing them apart and putting them back together.. you get to see everything come together infront of your eyes. But a chiltons or haynes manual does wonders in instructing procedues and specs when you have to disassemble and reassemble. Hell, if you can get your hand on a Factory Repair Manual, you're in the money.
I've done this two times myself now, on both of my 4AG engines, both without problem.