You can align the doors your self BUT, it takes ALOT of patience...(last set I did, I had 6 hours+ in them and I could have gotten it better if I would have taken even more time) once the doors are aligned properly you will probably have to realign the windows and might even have to realign the fender depending on how good the body initial alignment was before.
Most of the adjustment is in the front hinges (up/down and in/out - multiple combinations create a 360 adjsutment)...what you can't do there will have to be done by actually bending/twisting/tweeking the door for a final good fit.
There is no forward and back alignment.
The striker in the jam is for IN AND OUT location adjustment only. Alot of people will use it to lift or drop the door into alignment at the rear when the door is closed - big mistake.
It's actually best to remove the striker so the door will swing open and shut easily during adjustment. Reinstall the striker when the door is aligned.
Always start by getting the proper up and down location of the door - you've got to make sure it's in the hole square before you do in and out...
Tape the edges of the fender and door with HEAVY thick tape to avoid chipping during initial alignment.
Good luck - I personally like aligning panels - it's always a good challenge.
