i have 87 banshee head milled toomy pipes 3/8 reed spacers boost bottle t.o.r.s. elimnatore kit idle screws installed stock airbox with k/n cover off only jet i changed is main form 270-330. and still can not get it to run right i,m at 240 ubove sea level what else could i change too make run right mostly breaks up and boggs at full throttle can any body help please ?