Also changed the 50-34 rings on the Ultegra to Absolute oval 46-30. Setting the FD was big pain in the ass!!! It took me hours to get it somewhat right, so that the derailleur has no rub in the smallest and biggest ring. Problem is that the Absolute chainrings are closer to the frame, so i couldn't move the FD all the way closer to the frame to avoid chain rub. When i managed to get it set i worked without any problems, but there is like a millimeter or lees space between the chain and FD.