Hope one of you can help me out or at least gives ideas on what else to try & check.
Must be overlooking something

Had a Duster for years (totally redone 4000miles ago) and after having not ues it for long time its hard to start but lately stopped firing up at all. Its a 340 pumpgas, solid cammed, x-heads, edl intake, holley carb, msd etc backed up by a 727. It cranks but will not start and only every now and then gives it a try to fire up but nothing much. Checked and replaced so many stuff already but no luck. Not even with brake cleaner...

Replaced or changed out (step by step) mopar distributor, msd blaster coil, battery, spark plugs, msd wires, fuel, etc
Checked compression and all cylinders on average between 150-160psi
Checked valve lash and all still fine.
Checked spark at coil wire and gives 1” blueish solid spark.
Get spark on the plugs as well.
Gets fuel from carb or brake cleaner.
Checked tdc vs balancer and is correct.
Timing havent changed but turning it both sides did not make any difference.

Got compression, fuel and spark but no luck.
Supplied full 13v to msd 6al with extra batt but no change.
Extra ground cables directly from engine to battery but no change.
Battery fully charged.

If in the end it starts its mostly after having it sit for 10mins so theres only like vapor in the intake. Still very hard but IF it fires up it runs fine as ever.

Cranking the engine it sounds a bit like theres no compression but test says its fine.
Feels like the spark is not lighting the fuel, and ir fuel not atomizing, lack of intake air speed or something.

Im out of ideas so anything is appreciated? What and how to check more?

Thanks a lot!
Hans