[steve185]

Nice looking motor.

Ford used several different timing chain covers and the location of the timing indicators are different. They also used different markings on several different harmonic balancers to match up with the appropriate timing cover.
If your engine is running fine I think you need to find a timing cover with the indicator in the ballpark of where you harmonic balancer marks are now when the timing light strobes on them. Or, it is probably be easier to get a new harmonic balancer to match the indicator you have now. Jegs, Summit all have them at a reasonable price. I got one from them and smeared a little white rust paint into the timing marks to make them easier to see.
Steve