Congratulations on your new QVP. The dealer who sold you the machine should be well versed in helping you fix any issues. I am considering the same machine so I would love to hear what you think of it so far.
I have a Juki TL98Q which sometimes does not like certain threads. I was having shredding issues with Superior SoFine using a 90 titanium top stitch needle (bought from Superior). I switched to some rayon embroidery thread and had no problem. I did not try any of my other SoFine thread. I should try that.. lol.
Please, do share your experience with the QVP though... I'm on pins and needles here.
~Christina near Cleveland, OH