Ok, thanks to all for your input and responses! It is very nice to receive such a warm, friendly and helpful welcome onto this forum!
Well after a bit more playing around I have some interesting results...
Firstly Bub - many thanks for the heads up on the Melda stuff...some great things in there!
Using the Melda tuner app I can check that, yep the Kontakt samples are pretty much perfectly in tune....
I also checked that the piano sample are also in tune..yep no problem there either....
But the playback through Sonar just not sound right at all.....at this point I was really questioning my hearing...
Then as I mentioned above I have saved off various parts to an MP3...and whoa...on the MP3 playback everything is perfectly in tune!
So....why does it not sound right in Sonar? No idea. I am using a digital piano as a MIDI controller so there is no pitch bend available...but I found that even when I programme the bass by hand the same thing occurs..strange...
Anyway, I guess I can live with this for now knowing that the final "print" should be ok....
Thanks again