A problem with my HobbyKing Pulsejet

Unfortunately, there seems to be a problem with the “flowjector“ on my HobbyKing pulsejet. Instead of directing the spray of air and fuel down the inlet tubes, past the valves and into the combustion chamber, the angles are such that the fuel hits the venturi then runs out the front of the engine. Despite having plenty of air pressure, fresh fuel and a good spark, the engine barely managed a couple of very weak pops and when I removed the valve-head it was still bone-dry inside.
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