depending on how bad it is all you should* need to do is just unbolt the rail and pull it off with the injectors in the rail... be sure to not let the injectors come out of the rail or you will need to get new o-rings for that too because they tend to expand beyond capable of getting them back in. You SHOULD NOT have to pull the injectors apart or any other fuel lines unless you plan on bringing them somewhere to get them cleaned or replaced. I just got done putting my sled back together too.