so it took the kdx out for a blast a few days ago and i heard a noise that sounded like i was dragging a bag along the road but was coming from the engine so i shut it off as i was outside my house so i dumped out the gear oil and put in new and started it up and it sounded fine after running for about ten minutes so i just turned it off and went in, anyway i took it out again yesterday and got 10 minutes down the road and heard the noise again and pretty much instantly the engine just died, i pulled in the clutch and let it back out at about 5 mph and the rear wheel locked for a moment but then was free again, i got my mate to pick me up in his van and got the bike home and took the head off and the piston and barrel are both heavily scorred but the rings are fine and intact so something must have come up out from the bottom end, i will split the crank at some point this week and let you know what i find, i feel well gutted :(