I've been working on setting up a strat partscaster I put together in December, and for some reason, I just can't get the thing to set up right with 9-42 strings tuned down a half step. Just too rattley/floppy. I think I just need to mess w/ the truss rod and saddle height a little more, but I get the feeling that on some guitars, 9's are just too floppy tuned down to Eb. Don't really have this problem on my teles. I'm also not used to strats (being mainly a tele guy) so there are probably more factors at play keeping me from my ideal setup on this guitar. I did however get it set up with 9's at regular pitch and it sounds great! But alot of the rock songs I learn are tuned down, so this is frustrating me.