Fuel line connector O rings
 

I have just been through the mill trying to figure out why my 92 won't start. Won't go into all the detail (there's plenty) but have narrowed the search down to where the fuel supply and return line connectors seem to be the possible culprits. Maybe even the 'draw tube' in the tank.
I very much need to know where I can find either the O rings or even the whole connector. Would love to be able to find an on line schematic with parts numbers for these things but have not been able to turn up anything on my own - - - HELP!

Thanks