acer 7730ZG os-vista with all updates running 2011.5 useing Tascam 122L audio and midi interface

Hi im trying to add a clarinet track to my tune using my WX5 wind controller i have set up the song with the melody track(channel-4) with a clarinet sound attached, the thru track(channel-5) also has a clarinet sound and i have set the WX5 to play a clarinet sound i have checked the channels in preferances and they are as i have said, the problem is that when i try to record the melody track it changes to a trombone sound,it plays one note of the clarinet sound and then atrombone sound takes over and i can`t find where the trombone sound is coming from i have checked every thing with out finding it anywhere anybody got any ideas as i am fed up trying to play something that shoud be very simple
regards Dave


I always play the right notes but not always in the right order