Heres plugs 2-8. Replaced them with lightly used Autolite 66's I cleaned and gapped. Pics of 66's before install for reference.
The 1 step leaner recommendation by Eddy states a rod and jet change....I have the rods but not the jets.
Would strictly a rod change help do you think?
Champion RN14YC 1st pics, then
AL 66