Need some ideas folks. I seem to be chasing my tail on my tune. My carbs will be great , steady idle , smooth thru the dreaded transition areas and then it changes, all in the same day. The car will die at idle arbitrarily. I can watch my AFRS go lean until she just seems to run out of gas. The other day, probably the second day driving it the tune was amazing. Transition stayed right around 14 and it didn't lean out and felt powerful right thru the rpms- this is normal driving conditions. Then all the sudden I have lea out issues in transition. New fuel pump, regulator set at 3psi. So I guess I need to check my tank and lines for some kind of partial blockage?