Anybody experienced problems installing the A string on a Spector rebop 4 bridge? the string would just not fit the bridge, the blue stuff was too big and it prevented the insertion of the string. I had to remove some of the blue stuff to make it fit, is it always like that with the Chromes? did I get a default set? (by the way first time with flats, really really like the feel and sound!) other question: are there any other flats that don't leave your fingers with black stuff on them after playing? I used to play with Dean Markley blues steel and wasn't getting that. thanks!