Im in the middle of replacing my cam sensor on a 94 ford 4.0 V6. Im wondering how I would set it to TDC after the cam sync has been removed from the block. I assume its possible I mean they do it in the factory right?

I marked it I took pics I removed it and now I cannot for the life of me get the new one in and even the old one only goes in in the wrong way so Im thinking I have it at tdc but 180 out? I do not want to screw it up but need to get it done tonight any tips?

the new part is identical down to the casting marks etc so Imnot sure why it will not fit I also do not have the special tool as no one here carries them and if I wanted to wait 3 weeks and pay $60 I could order one but thats not an option so I made one it works well holds the tab in place I just cannot get it to seat down into the gears I really need some advice I have someone coming to buy it tomorrow

pictures located here in google drive

https://drive.google.com/open?id=0Bw...GhNSG02aXVZeEE