Elektron Musical Instruments

I don't know if this documented or just something up with my MD.  But ever since I got my 
MD UW upgraded unit back I noticed I cannot scroll the sound selection wheel very fast 
because the LED on tracks seem to go in weird/reverse directions.  Same with tempo, if I try 
to turn the wheel fast to get to a faster BPM the BPM appears to go faster then slower then 
faster.  I can never reach 300BPM because it goes 250, 280, 273, 284, 279, etc.  Not that I'd 
want to go that fast but what's up with this?  Or I'll use the wheel to scroll to an MD machine 
real fast but then get a stuttering effect on some machines.  Mind you there's no problems if I 
turn the sound selection wheel slowly.  Can somone confirm this on their UW for me?

monads