Can you record and look at the wide ban readings for the entire run? If so is it a little rich for the entire run or just the first 100 ft. or so? If so try making it better the entire run thumbs twocentsI had fuel delivery issues that I found with my LM1 and once it was fixed I could jet the carb. up enough to slow the MPH down in the 1/4 mile and 1/8, that was on pump swill and it would leave te starting line at 14.3 and lean out to 15.8 shock It didn't miss or break up at all, the plugs look good also work
You have a lot faster 60 ft than my car ever did, my car ran 9.99 ar 134.+ MPH in the 1/4 mile and low 6.3s at 99 MPH at the local 1/8 mile track work I had to slow it down at both tracks do to the roll bar only and no NHRA certs for me or the chassis whistling

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)