Ok first off my banshee runs like a raped ape 1st thru 5th but will not pull in 6th
My mods are
34mm mikuni carbs
Aggressive dune port
Vf4 reeds
+4 timing plate
Chrome crossover intake
Pod airfilters
Shearer inframe pipes
Stock head and bore
12tooth sprocket in front stock in back
Running 4 snow tires 22s
Elevation is 5400feet
My current spark plugs are a tan color near the center electrode
The plug chop I did weeks ago looked a little rich but I'm still learning here
Where the plugs threads start is black and wet on the end .
I'm also witnessing bubbles in the fuel line during revs in neutral I'm just not sure if this is a fuel delivery problem .
Any help is greatly appreciated
Thanks