something with in your evap is leaking, so you could try carb cleaner, spray the T's and ends of the lines, where they plug in, also move them a bit when spraying. spray the evap solenoid and map sensors on the back of the engine and the the hoses off the top of the TB, that one that loops back goes to the evap, it breaks as well as the other old factory rubber ends. and the egr tubes.
i think you said you did new vac lines, i dont know if you did all of them or not.
lim would have to real bad to cause the leak. but i have heard of the O rings on the injectors causing a vac leak, or miss fire as well.
