ANY WW2 Historians here??

B-29s were late in the war. Before that the Pacific was a mix of stuff but B-24s for heavies. They could not bomb Japan before the B-29s got out.

Not quite true - the Doolittle Raid bombed Japan with B-25s before the B-29s were there.
But that was for morale purposes (our side) and demoralizing purposes (their side), and a one-way, one-off mission. Not sure how those air crews managed to fit their huge brass pairs in those tiny bomber seats...

https://en.wikipedia.org/wiki/Doolittle_Raid

Two of the 80 Raiders are still alive today.