Real bing or clone carb
What is the atomizer size
Spark means nothin if not in time or weak under compression
What is point gap setting @ just past top dead center and what is timing set at ?
Here’s my 1980 magnum with a 14 mm bing and 14mm intake, 212a atomizer 70 jet, large metal mesh filter, head sanded down a mm or so, modified stock exhaust, Magneto completely serviced cleaned and greased, points gap set at 17 thou of a inch, timing set at 18° before top dead center with second gear clutch flipped, new pucks, 30mph Stop Pin pulled out of speedo,