Templar M keeps stalling

[NYCDiesel]

Hey guys, I posted a while ago about how my bike started cutting out after it warmed up well now it has progressed to the point that now it dies after a few minutes of riding. The only way for me to get it restarted is to mess with the choke adjustment and for some reason that will allow it to start and run for a few minutes before it dies again and I repeat the whole process. I pulled my spark plug and I think it's running rich? I also have to adjust the valves but I don't have space right now to pull the gas tank and all that off. I attached a picture of the spark plug, I'd greatly appreciate some help bc this is quite annoying.