Ok so you can go threw 1st hard..as in it pulls all the way to you shift point but when 2nd reaches 3k it bogs? Or does it bog at 3k in 1st too? If you are really "getting it" the 800 eddy might be having a problem keeping the bowls full. 5/16 fuel line is fine for your application. What fuel pump is on the car? What is your timing set at?