UPDATE - dealer fixed the carb problem after I threw a hissy-fit. And now, the bike runs incredibly nice - super smooth & very peppy. I really like how it runs. Sheesh, I wonder when the dealers will get the idea of "dealer prep"?
Anyways, during my hissy-fit, I also mentioned the mirror & clutch lever. They didn't have either in parts stock, but they swiped a mirror off of another customer's bike in for service and gave it to me. (what are they going to tell that guy when he returns?) I have to wait for a new clutch lever. I'm making due with the broken one.
But now the bike runs fantastic. Damn, it is fun. I love these little bikes. And they are sooooo narrow - great for squeezing through even the most narrow gaps.
For what it is worth, the YBR 125 is quite a different bike from the YBR 250, so my experience with the 125 shouldn't migrate over to reflect the 250's characteristics.