A couple of checks to get you thinking
Base engine.
The roller block and your OEM distributor gears match?
Verify that, and also actually check the degrees of crank rotation before the distributor rotor turns (each way)
Check the base timing again, verify 10 BTDC with the spout out
Install a noid light in each injector and test the processor ground signal signal throughout the full rpm range
You should get just about a steady looking noid light at WOT
Manually fire each injector while monitoring the fuel pressure drop