I just got my bike kit 2 days ago. I hope im not doing permanent damage to my bike, but i started noticing a few things. -engine is hesitant.. I can be cruising along (maybe 15-20mph) and the engine is running rough, then all the sudden it smoothes out and I immediately feel it accelerating and has more power; but that is short lived and quickly starts running rough again and wont let me go past 20mph until it smooths back out -I noticed this black oil/fluid around the spark plug on cylinder head. Not much but enough to make me look closer. I took it out (see pic below) and you would think it had 10,000 miles rather than less than 10! It looks like the ratio is way too rich. I am at 7,200 ft above sea level, so I adjusted the carb jet to be leaner but havent really got to test it out (bad storm outside). -There is also black oil/fluid very slowly dripping out the tailpipe when running. Mind you, the gas/oil mix is at about 20:1 for break in, and is light sky blue in color (synthetic 2 stroke oil) and is coming out black-as-night out the tailpipe. Again, I am a newbie but this does not seem right. The spark plugs that were left in past 80,000 miles on my wifes car looked better than this one does after 10 miles. Basically, what I want to know is did I mess up? I am assuming I will need a new spark plug, I just hope I dont need much else! Thanks for your help!