Just another thing to double check...Your wire in the spark plug cap may not be touching the spark plug tip. This is also a common issue with these kits, I've seen this twice where the cap guts are badly twisted and buried 1/8 " from the plug tip. Thus wreaking the spark. Take a flashlight and look inside the cap to be sure the wire ring inside is located properly
Where it snaps onto the plug top. Also some plug tops have an adapter for a bigger cap wire loop and some smaller wire loops need that plug top Adapter taken off. It's very inconsistent.
"One pull and It's on, one snip and its off"
“Lets not get too technical”