Engine flat spot and hesitation

[andy8688]

Thanks to you all for your replys, today I took the the car for a tune up, he took the carbs apart only to find the float levels where to high so he had to bend a fork like shape piece.
The middle carb was slightly sticking, the other problem he found was that my radiator fans were not working, loose connection, ran the car today for about 20 miles only one small bit of hesitance, fuel pump is OK other thing it could be is fuel vapourisation. Could this be the hot weather we are having.

Andy