before you keep blaming fuel issues...
do you have spark- I saw it asked repeatedly, but never answered-
unscrew the plug from the head, hook it to the wire and ground it to the case, do you see spark, if not grab ahold of it, do you feel spark, this makes it hard to miss-
if you have good spark then blame fuel, if not work backwards, wire, coil, etc...
mine wasnt firing on 1 cylinder one day so i grabbed the plug wire while it was running, told me pretty quick that the wire had come apart-
Harbor Frieght( i am sure other places have them) has a tool you plug inline with your plug-
the bulb lights if you are getting spark- pretty simple but its easy to do-