Originally Posted by skidxr
Does anyone have any other thoughts on this? I swapped out the oil with 10-50 but it didn't make any difference.
Put bike on center stand and have somebody start it and listen around the bike close up.
Put it in gear, run the engine and listen close up.
You should find the source of the noise pretty easy this way.
Most have a somewhat loose drive chain which it should be, and noise will result especially if lugging.