Yea.... I am fully aware these suckas are clakety and even thumpin1203 complimented me once on how mine seemed quieter than most.
The reason I got concerned in the first place is that I know the sounds my bike makes pretty good and a new one had appeared. Amongst the symphony of clicks, ticks, clacks, rattles and whoomfs was a new chirp sound. Like I said... until its looses power, starts smoking, explodes, starts dropping parts on the road, or just plain dies.... its perfect!
I will just keep an eye on my oil level every ride.