Not needed, his engine is accelerating. It is not at a point of max rpm yet. So take it somewhere else.Would you like some salt with that crow?!
I still think it's out of fuel at sustained wide open throttle. When he backs off the throttle the fuel bowl fills back up.
Hey OP do you want me to dig around and try and find a stock size jet to send you? If so message me and send your address. It's something helpful and constructive unlike some smartelic crow comment.