Lately I've noticed that my 5G (98, 102000km, stock barring a K&N air filter, de-PAIRed, Delkevic muffler) wants to occasionally stall when coming to a stop and pulling the clutch in. This only happens when it is pretty hot (around 100C), and does not seem to happen when the temperature is lower, although I do see the idle dip a little. I have the idle set to 1300 rpm and the starter valves are correctly unbalanced according to the manual, and idle is very steady once I am at a standstill. Can anyone suggest a possible cause? There are no FI codes, and the throttle boots are fairly new and tight.