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Join Date: Sep 2005
Location: New Westminster, BC
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Having experienced both scenarios first hand, I can vouch for the two gentlemens' suggestions above.
The good news is that it's a pretty simple system, and once you've checked and fixed or renewed any dodgy connections you should be good to go.
Things to look for - loose clamps, damaged or chafed fuel lines, old gaskets at bleed and hose fittings (the copper ones can be renewed by heating them up with a propane torch - away from the fuel system, of course!)
I recently had a crimped pickup line inside the tank, and a friend recently had a bleed screw that had cracked in such a way that he didn't notice til he attempted to retighten it after bleeding, when it broke clean off.
Minimize connections where ever you can.