I need to ensure my fuel cap is vented well enough too. Most caps are rated at 2 psi before they vent I think? I will have the 1/4" line running to the valve cover breather so I don't think it could become an issue.
Am I reading this correctly...? you have a fuel tank vent running to your valve covers?
EDIT: nevermind...I scrolled up and saw your diagram...and thats exaxtly what you mean. wow, new one to me....that's why they don't let me own concourse cars....that fuel line conglomeration would last about 5 minutes at my house lol. (Meaning the factory stuff...Nothing derogatory meant about what you have done)