Hello. Wondered if anyone could help with a problem I have with my MKIII GT6 please? Essentially, it runs fine when started from cold but then cuts out when it gets warm. If I leave it for 30mins it will restart fine but then cut out again after a while. I initially changed the fuel pump, the coil, and reverted back to points from an electric ignition but the problem still remained. I then noticed that the fuel filter generally empties before the car cuts out. If I detach the fuel pipe between the fuel filter and carbs immediately after the car cuts out, there appears to be some back pressure in the fuel pipe. If I turn over the car with the fuel pipe detached after the fuel filter, the fuel is delivered fine. I suspected a problem with the float valve in the carbs and replaced both on the Strombergs but that didn’t help (one was sticking so I thought I’d nailed it but alas this was not the case). I now suspect a fuel lock it generated - possibly due to some potential heat escaping from the exhaust manifold gasket but I’m clutching at straws now. Before I start taking the exhaust manifold off, does anyone have any ideas or suggestions for me please? Thanks.