Yesterday I strung my N90 with Babolat Pro Hurricane in the mains and Wilson Sensation in the crosses. The result: what a dead feel! No power whatsoever! Later that night my friend told me that he witnessed the same when he had his RDS001 strung with PHT (mains) and a softer string (forgot the name) in the crosses. He thought the combination of the Hurricane (mains) with a softer hybrid didn't do any good to the Hurricane's benefits. Any ideas on this one?