i've read alot about this on the website, where is the "on the fly actuator" i've looked everywhere on the front axle! i'm i blind or what? are there any pictures of where it is on the web? also when i push the 4wd button i can here the clicking on the tranfer case but it's still stuck in 4wd! i've had it serviced (trans fluid, transfer fluid, front & back diff fluid) and it went back to 2wd! but like a big dummy i pushed again and.....yep stuck in 4wd again! please help! also where are the vaccum lines? are they under the hood or under the truck? please help........