Well i took my 250 carb round 2 my mates who has some vice grips i needed 2 undo the screws with the intention of taking the float outta the 250 carb and putting it into the 200 carb which bogs at high rpm. i took it around there and they wouldnt get the screws out. So i hung around there for abit rode the trike up the drive to show his brother and then tried 2 start it 5 minutes later and it wouldnt start. So i swapped the spark plug with one off another 200 and it wouldnt fire and push started it and nothing. Anyone know what could be stopping it? I rode it 2 my mates without the black thing that connects the air filter to the carb(stupid i know).