Elektron Musical Instruments

i need help...

everywhere i read that the md will sync to logic 7.2 express fine but
it's not fine at all.

i've tried basically every setting i can think of and at best i can
get the md to sync to logic with the settings "tempo in: external" and
"ctrl sync: on" and the machinedrum is synced but it's stuttering
trying to stay in time.  it sounds horrible.  its a very noticeable
stutter compared to when the md is running on its own.

how do i fix this?

thanks

matt