My Road King pulled slightly to the left and now my Road Glide does too.. Just figure it is part of the animal...

 

there is definitely something is wrong. I can ride no hands straight as an arrow with a little bit of lean to compensate for crested road or an imbalance in bike at pretty much any speed over about 25. btw I have MC II's on mine now too. Also to make matters sound worse in your case most roads slope slightly to the right not the left so yours is overcoming that plus quite a bit more.

 

I found that leaving my billfold in the trunk helps mine go straight. I was sitting too far to one side with it in my back pocket.

 

By chance is there a Harley Dealer on the left side of the road?
Actually, crown of the road, your balance of the bike, slight pull of the cables; all add to which way the bike will want to move when you let it go. You can shift your weight, i.e. lean to the right and you will feel the bike start to straighten up or even pull to the right.

 

Very likely wheel alignment/read motor trans alignment to the frame. See Glide Pro's website for free vid on how to align the wheels properly using inexpensive laser levelers and blocks of wood or metal. You should be able to ride hands free for long distances if the bike is aligned properly and the tires are good no matter the crown in the road.

 

Very timely thread. I just made an appointment to have my 09 RKC looked at for this very same issue this coming Thursday. If I just barely lift my hands off the grips the bike leans so far to the left that I'd be in the median in less than 100 yards. I have shifted my weight all the way to the right, emptied the bags, and press down hard w/ the right foot and it still leans WAY over without any weight on the bars. I've noticed this bike leans hard ever since I bought it last month (2500 miles ago). Hope they can get if figured out under the service plan.