The vapor separator probably has some pin holes in it if fuel is coming out of it. The whole side was rusted out of mine and I had the same problem.

You can try to solder or braze up the holes in the canister or just bypass it. I ended up just plugging 2 of the vents and leaving the other 2 open with pieces of fuel line going up to the shock crossmember area. I would replace the separator if I could find a new one.