Those two things are normal.
Keep riding. New plug?
Sounds good. It's raining quite a bit so I can't get much riding in, but have plenty of time to work on the bike.
I did get a new plug (NGK BR8ES) and it seems to be running similarly, if not better. Last time I got to get a good ride in (had new plug in as well), I learned that I remembered the talk about riding 2 strokes "on the pipe." I've definitely noticed a difference there and I'm unleashing all this power I wasn't aware of. Though, I have noticed that if I'm twisting the throttle 100% it takes a few seconds to get in the power band. Is this normal?
I also get spooging from the cylinder/exhaust port and all the yucky stuff gets on my pipe. I haven't experienced anything blowing out of the silencer though.
Lastly, I checked with the previous owner and he said the bike still has the stock jets in it, though he did change the needle position but can't remember to what. The bike is a KDX220 w/ v force 3 reeds, FMF gnarly pipe, air lid cut.