After landing, shutting down the engines for around 20 minutes resulted in the injector lines becoming heat soaked and becoming cantankerous to start.
That's the one thing I like about Continentals. If you run the fuel pumps with the throttle closed and the mixtures at ICO, it actually cycles fuel through the lines, making them much easier to hot start than Lycs. Give them about 20-30 seconds before cranking.
The problem (common to both makes) then becomes starters and cabling having incresed resistance because of the abmient heat.