Daz don't loose sleep over it! Get out there and enjoy it.
I am sure you will get other opinions from this thread, and you could always take it to a local mechanic and get them to put it on an analyser and give you a more accurate diagnosis.
I guess tbikes' claim of "no rejetting required" holds out! It may not be a bad idea to experiment with different jets some time in the future, but going by the condition of your plug, it's not something that you have to do right away or else your engine will blow up. I think those oil temp gauges from
Newpeedmaster are a good idea too, as you can monitor changes in engine temp. which should give you some visual indication of whether your mods are making things too lean or too rich or possibly harming your engine. I ordered one the other day.