Won't start. STL Mechanics?

[ctadams21]

I rebuilt the motor and turbo. It started and ran really rough. Gradually got to where it would not start at all. It acts like the timing is off but no matter where the distributer is, I still get a slight kickback. My local shop is stumped but they are convinced it is somehow timing related.

Here are the facts:
Getting fire
Plugs wires are all in correct position
rotor is in correct position
getting good fuel pressure when it primes
When it did run it set off a code 42 and 45. I replaced the o2 sensor and checked the ignition module (checked good)

Are there any guys in the stl that work on these?

Thanks

Clayton