Reply to cant scratch, wont scratch

hi guys, i got a vci100SE a while ago and the right jog wheel has never scratched properly when using it on deck b. I have recently started using it for 4 decks using the new tsi file and found that it does scratch when im using deck D! I have checked the settings and taken apart the VCI, everything seems in order but it still wont scratch deck b, it will search however on deck b when scratch mode is deactivated. any ideas how i can get this to work? It only seems to work on the right hand side of the wheel and not very well then either. FYI i am using the newest traktor pro update and the latest TSI file from here.

Cheers

Chris