its prob just runnin rich-factory set it this way for break in. lean the top out just a little at a time. it will help you to get a temp gun so you dont get it too lean and hot. as for it wanting to keep moving its prob got the idle set too high. or the trim on the radio is high and the idle is low? so when you apply the brakes it dies. these are all easy to set w/ the linkage /radio . the factory doesnt usually have them set right. the fuel is common around the plug if it floods. take it out and turn it ove to get the fuel out then put it back in and make sure its tight. all of your problems are easy to fix and are just settings not mechanical.... you shouldnt have to buy anything.