Re-setting to factory settings isn't the cure for a bad tune. All it does is give you a safe place to start from.
I recommend getting a temp gun(if you don't already have one).
Don't try and tune a cold engine...The engine's requirements will change until it gets to operating temp.**widely accepted temp range...200-275 degrees F.**

More fuel is more oil, therefore it runs cooler.
If it has 'too much' power all the sudden, or if it revs up, and then cuts out with the throttle at WOT, then it's too lean in the hsn.
If it keeps reving for a couple of seconds after releasing the throttle, and then idles down...lsn possibly too lean.(I'm not 100% sure on that)
If it sounds 'bubbly' when it idles, and lots of excess fuel dripping out of the stinger, then lsn rich.(notice I didn't say 'too' rich?) I run my engine a bit rich in the low end, so that if I want to, I can leave it sit and idle for a full minute, while I run into the garage for screwdriver. That isn't tuned for optimum performance, though. If I leave it sit for an extended idle, then it has a tendency to load up, and be real doggy when I throttle it again. But it's easier for me to spend a couple of seconds clearing it out, than it is to take it back to the bump box, and restart.

You just need to keep in mind the basics, and then develop a personal relationship with your engine.
Good luck.