Hello i am new to the forum so not exactly sure where to post this but anyways my friends 250ex wont start its getting spark, i changed the spark plug, and i cleaned the carb out. Im thinking maybe the carb needs adjustments? i sprayed starting fluid in the intake and it fires of course but then it will just bog out and not even act like it wants to run... I'm so lost can you guys give me anything to check or ideas of what it could be?