More Trunk Fumes (87 spider)

[JHahn22@domain.elided]

Hello All,
Sorry if this has been beaten to death again recently, I've haven't been 
keeping up with the digests lately.  Anyway, here goes. . .
I've got the infamous trunk-full-o-raw-fuel fumes problem, and built up 
pressure in the tank when I remove the gas cap.  Also, when filling the tank, 
I have to kind of cant the fuel nozzle in the filler neck to allow air to 
escape out the filler neck.  Otherwise, the nozzle thinks the tank is full 
and stops pumping (that familiar "CHINK" that tells you it's full).  I've 
filled up at plenty of different stations, and it always does the same thing.
So far, I've checked the filler neck, and replaced the check valve at the end 
of the T connection in the hoses that live near the big plastic canister and 
jack in the front of the trunk compartment.  
I'm thinking what it actually needs is the other 'in-line' check valve.  But 
neither centerline nor IAP seem to carry it.  IAP can order it, and have it 
in 8 weeks or so (for the low low price of $35), but for such a 
simple-looking little one way valve, there must be some easier, cheaper way 
around this at the hardware store.  
Has anybody else run into, and solved this problem ahead of me?
I know of plenty of other Alfa parts people I haven't called yet, but if IAP 
quotes $35, I'm thinking there must be a cheaper fix other than the 
prescribed Alfa part.
Also, I'm probably going to start replacing fuel lines soon as well (the fuel 
pump is getting noisy, and it's less than 15,000 miles old, which makes me 
think the hoses are rotting from the inside out).  Can anybody tell me what 
size, and how many feet I should go with to do the whole car?  I don't like 
worrying about catching on fire as I drive down the road.
Thanks in advance everyone,
Jake Hahn
87 Spider
89 BMW 325i

P.S.  I just got done doing the rear trailing arms (urethane fronts) and 
"reaction triangle" bushings (also urethane).  WOW!  I had no idea how well 
this car could handle!  Highly recommended "upgrade" if your spider wags it's 
tail as it comes out of the turns. :-)  

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