Ticking or Rattling noise In CYL #1

[tbrink54]

Just bought the Truck, Runs Great, I drove it home from Nashville to FL. It has an Excessive amount of Valve noise is the only Way I can Describe it. It is Defiantly in cylinder Number 1.Or in the Timing gear train. The noise is up top, Not in the pan, Nor even on the side of the engine block. I swapped injectors from 1 to 6, Same noise and it didn't move to Number 6. Running the Rack now but It doesn't Seem to be out enough for the amount of Noise. Wrist Pin? If I drop the pan will I see a lock pin? Not sure where to go from Here. But I have 7 Other trucks (4 871s and 3 2250) and I know that this isn't normal, Id Rather Eat it now than on the road.

2012 Pete 386
512K
2250 ISX Cummins.