Hi, I bought a new cns carb from Spookytooth for my stock 48cc bike with 44T sprocket. With the old carb, I could pull max revs. With the new one, at WOT the bike is not reving out as much, like it needs more fuel. What is the next step I should take to try and fix the problem? Checked plug, and it is dry. Should I drill out jet, or move needle? thanks