I've read this thread through and have the same problem with the 46 cutting out at full throttle. I've tried everything to fix this problem. New hose (no air bubbbles in the line) New plug, filter, cushioned the tank.... etc... The engine is tuned right. Did the pinch test and resolts are perfect. The engine idles fine and runs very well at 3/4 throttle. When I push to full throttle it cuts out. I can run the engine at a little over 3/4 and it runs for ever with out a problem. Only happens at full. Any one have any ideas?