John.
Here's the tank end of the filler neck.. If something is lodged down there, it'll clog things up for sure.......... It's not a direct filler neck diameter passage as you can see........

6717513-DSC04149.JPG (53 downloads)
Troy
Houston Mopar Connection Club
'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi)
'69 Charger 500 440 - 4speed - 3.54 Dana
'70 Road Runner 383 - 4speed - a/c (now with 440)