Elektron Musical Instruments

i'm a novice at this so any help would be greatly
appreciated:

i'm trying to configure my set-up so i can sinc my MD
to my microkorg arrpegiator for live performance.
while i have been able to set one clock to the other
(and vice versa) there is always a short lag so that
the microkorg is a fraction of a second too late (even
though the timing is correct and when i record i can
shift the track to correct for this lag). any
suggestions?

also looking for a cheap midi keyboard to control the
MK since it has mini-keys. recommendations?

thanks! Greg