[Rovernet] P5 problem persists

[Peter King]

Hi Netters. 

Sitting on the side of the road at the moment, waiting for the P5 to cool down enough to start again. Obviously, running problem persists. Checked timing and compression again. All good: compression 140, 141, 140, 120, 145, 140. New plugs today. Adjusted cold start lever to ensure it closed properly. Checked carburetor tune again. Start quickly, runs beautifully for 20 or so minutes then begins to sputter till it shuts down. Once it cools, all is good for another short trip. 
Now what?  Still fuel delivery?  Not enough pressure from the pump?  

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