K5 as a MIDI controller

Hi! I'm a new user of K5 from Argentina, i'm playing it for 2 weeks old.

I tried to play it as a controller with my pc and have had problems with 
the damper data, although the application of midi / audiodamper receives ok, do 
not play in some virtual instruments on others if it does well. The strange 
thing is that with the internal sounds work normally. Has anyone 
had this experience?
It also occurs to me that with my Roland EV5 expression pedal only 
recognizing half of the value (when the pedal is closed, the value isin 
the middle) If anyone has had this experience and 
the addresscould appreciate that I can share with me. Thanks! and sorry for my 
bad english!
 Martín Cabello
lymproducciones-/[email protected]
http://www.lymproducciones.4t.com