cheers aschleman, I did change the string trees the same time as the saddles. Although I don't use a tremolo very much at all the music I play does have a lot of string bending in it so I was hoping changing the saddles and trees would help out there but the main thing I've noticed since the change is less string breaks, it seems that ppl either love or hate the roller saddles but so far I've really liked the change. :)