Whenever my GAMI injected IO360 powered Lancair 360 is really heated up, following a flight and only a short time to cool down (less than 30 minutes) and restarted, the engine will surge during idle and taxi.  Again this only happens when the engine is hot, has been shut down and restarted.  The issue never occurs when the airplane (engine) is started for the first time on any given day (super hot day or super cold day).Since I feel the issue is fuel related I tried leaning and use of the electronic fuel pump during idle and taxi with zero improvement.  The engine runs very badly with a pronounced surge.  If I get on the runway and give the engine full throttle, the engine will develop good power and lift off as if there were no issue...that is until yesterday when the engine just about quit 2000' into my takeoff roll.  I aborted the takeoff, did some high speed taxiing and then took off 3 minutes later (no shutdown).