2011 RMZ 250 cutting out when warm help please.

Hi guys. I wonder if you can help me. My rmz is cutting out when warm. I have determined that its an electrical/sensor problem and so far i have changed the spark plug, cleaned all the electrical connectors out, had valves checked (fine), had my throttle position sensor checked and reset, had my idle set correctly and ive run the bike with the kill switch disabled. I dont think its the tip over sensor because i spoke to a guy who told me the bike literally would not ride 10 yards.

The bike kicks first kick from cold, after it cuts out kicks up first kick again no problem. There is no loss of power when its riding, idles lovely and sounds perfect on the throttle. If i kick her over and ride straight away i can get 5-10 mins of riding before the problem starts.

Ok so i was going to try the ECT sensor. Apparently the bike will run without one for tedting purposes without causing any damage, will just run a little rich. Will this ECT sensor piss fluid out if i open it? Other option was to replace the wiring loom but obviously i want to exhaust all other avenues first.

Any ideas appreciated