Nice post @Spydro made me smile and sad at the same time. My dad had a immaculate 79 Stingray White with the red interior after a business he bought was not as promised he had to sell the vette a few years ago. He had this baby since I was only 6 years old. Yes new Italian and German sports cars...
Have you tried switching back to the top tank setup as this will give you a quick indication if its a possible residue in the new tank situation, Also I take it your juice consumption has gone up moving from the top tank to the Griffen. So if you switch back and it goes away drop your Nic and...
After @jifjifjif mentioned drilling another air hole and running dual coils I couldn't wait. This is a crude build 6 wraps 28 gauge around blue screwdriver. Works great