{Chrysler 300} WCFB gas inlet control / flooding

[John Grady <jkg@xxxxxxxxxxxxxxxxx>]

I wonder if any in club have any insights into this extremely aggravating and in a way  dangerous problem 
It seems every  time ( well, at least half the time ) after say a year or two of storage , I go to take out a C or D one of the WCFB overflows gas Sometimes a rap with a plastic hammer makes it seat most of the time no . 

As other carbs seem not to do this , has  to    be a real  technical reason . The gas does dry out,  so soon sits inlet valve  open in storage 

I think the originals had all brass needles , no rubber tip  , but viton supposed to be a lot better .That is true. so not the rubber per se? 

I had one on 57 dodge very poorly "rebuilt    " for 400$ by Daytona carb ( details have bern put up before , but they wrapped throttle shaft with .001 shim stock instead rebore and bush   ) Clueless . 

That carb also did this repeatedly , on and  off car maybe 4 x .   
Finally decided to go through myself 100 % . I rebushed  it  , wow, finally idle mix adjustments work right . 

But also chased this flooding after sitting thing . I found one float was scraping side wall of float "bowl"  a bit -- they must have bent it on its pivot mount , so not perfectly centered in its " tub" , It is quite fussy about that! --  has to be perfect gap equal each side . That fixed this one .. this may help someone with occasional flooding  .
But much  more to this , I think on  modern needles, the body  may be on large side vs bore for them ,???  they get deposits from dried gas and hang up  ? no real reason  imho as engineer why one would fit it so close on OD, especially if a  viton tip ? Let it find itself , not hang up  ? I bet it seals better if a  lose fit , -- no different problem in essence than an old  fashioned     conical toilet float, just  tipped over -- has same leak issue if it cannot self align , and be able  to do that, it  will leak on one side held high . 

Maybe someone else has been down this rabbit  hole?   Has   some clearance numbers ? Was this spec'd on original wcfb? had to have been , maybe  adding a few thou on diametrical clearance fixes all this  ? 
Any crud will make it stick in a close fit imho only  matter of time,  degree and luck 
I do  not want   my 300's catching fire as matter of luck   .
fyi 
..jkg  

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