do not grind the coils down just drill or use a round metal file to expand the holes toward the outer edge….
if you paid to much and have a bill take it back to the store … tell him they don't fit (out of spec if they measure different from yours)
order the cheap ones ...as you see fit …. keep your rubber booths cheapy coils do not come with rubber booths
coils must simply line up with the base guides
go see leroys page ....and pictures down a few pages for like up picture
http://www.outboard-boat-motor-repair.com/Evinrude%203%20HP%20Lightwin%20Outboard%20Boat%20Motor/Evinrude%20Johnson%203%20HP%201952-1967%20Ignition%20System%20Tune-up.htm