I just took the carb off my .47 to examine it from the bottom & look under the fuel inlet nipple. Took the nipple off ,looked down the hole. The opening in the spray bar doesn't look restricted. The spray bar in my cayb goes all the way across the venturi. There is a rectangular orifice in the middle of it that's pointed down. It's not an "eye" shaped opening such as I'm used to seeing. The end of the low speed needle obstructed that orifice. I concluded that the low speed needle is set too lean; such that fuel flow is restricted at WOT, no matter how far the high speed needle is backed out. So I reset the low speed needle by the "blow through it" method & reinstalled the carb in the engine with high temp silicone cement under it. I hope I can find a happy medium between the needles tomorrow.
CR