[PANAVIA]

Have you looked at the timing curve from 22 to the total >? ( where does it kick in >? ) 22 would be a biatch to start cold...

of course this all depends on where the cam was indexed , either using a timing chain gear modifier ( multiple key-ways) to advance and or retard the cam , or is it "Straight Up" . Even if it is straight up , was the cam ground with "advance-Built-In" --

I would chart all your info down and that way we can plan for tuning success.
(maybe a call to Shelby Engines is in order )

---Steve