The car ran fine the last couple of years and also earlier this summer. It started acting up about a month ago. Today it started fine and ran fine for about 5 or 6 miles and then it started stalling every time I slowed down and would miss badly on acceleration but seemed to smooth out once I got to 45-50 mph cruising speed. I set the float levels in the primary carb so that should be ok. I haven't touched the secondary carb because I wouldn't think it would be causing problems when I'm only running on the primary carb. I wrapped aluminum tape around the fuel lines this evening in hopes it might help if I have percolation in the fuel lines. I checked the plugs and they all seemed ok.